Search: “authentication-bypass”

35 stories

DomainAll Cyber AIWindow24h 3d 7d 30d AllIn the wild Important only Show duplicates

CategoryAll Exploit / PoC 13 Vulnerability 10 Malware 3 Threat actor 3

SeverityAll critical 15 high 9 medium 5 low 0 info 0

Smart search ranks by meaning as well as keywords (one row per story, last 45 days).

Cisco Identity Services Engine Authentication Bypass Vulnerability

Cisco patched an unauthenticated API authentication bypass in Identity Services Engine allowing attackers to access the web-based management interface.

A vulnerability in an API of Cisco Identity Services Engine (ISE) stems from insufficient authentication control on an API endpoint. An unauthenticated remote attacker can send a crafted request to bypass authentication and gain unauthorized access to the device via the web-based management interface. Cisco has released software updates and no workarounds are available.

Cisco Security Advisories16:00 UTC · 4h agoAdvisory 15 sources

LiteLLM Flaws Let Attackers Execute Code as Root and Steal Cloud Credentials

Wiz disclosed LiteLLM flaws including CVE-2026-59822 MCP auth bypass, now in CISA KEV, enabling root RCE and AWS credential theft from exposed gateways.

Wiz researchers disclosed weaknesses in the open-source LiteLLM AI gateway: CVE-2026-59821 allows authenticated administrators to execute code as root via the Custom Code Guardrails feature, while CVE-2026-59822 is an MCP authentication bypass where a meaningless Bearer token establishes a valid session. The MCP bypass was observed in the wild through Wiz honeypots and added to CISA's Known Exploited Vulnerabilities catalog on September 2. A scan of 3,074 internet-facing instances found 294 (9.6%) accepting the default master key sk-1234 or lacking authentication. Fixes shipped in LiteLLM 1.82.0 (guardrail hardening) and 1.84.0 (MCP bypass); exposed instances can leak provider API keys and temporary AWS IAM credentials via the pass-through feature and metadata service, with a related config-check issue tracked as CVE-2026-35029.

Cyber Security Newsupdated Sep 10, 12:56 UTC · 6d agofirst Sep 10, 12:26 UTC · 6d agoExploit / PoC in the wild 3 sources CVE-2026-59821 CVE-2026-59822 CVE-2026-35029

Another Artifactory CVE under attack by AI agents or humans

Attackers are actively exploiting CVE-2026-82329, a critical JFrog Artifactory authentication bypass, minting admin tokens on exposed servers days after patch release.

CVE-2026-82329 is a CVSS 9.8 unauthenticated authentication bypass in JFrog Artifactory, disclosed Friday, that allows attackers to create new administrative credentials. watchTowr's honeypots recorded exploitation from a small number of IPs within days, including enumeration of users, groups, credential sets, and federated access topologies. Researchers urge urgent patching, credential rotation, and treating exposed instances as potentially compromised to prevent build-pipeline tampering and downstream supply-chain impact.

The Register · SecuritySep 1, 21:07 UTC · 14d agoExploit / PoC in the wild 2 sources CVE-2026-82329

Hackers Compromised 14,500+ Dahua Devices Using Credential Attacks, Auth Bypasses, and P2P

Hunt.io disclosed Operation CameraSwarm, compromising 14,500+ Dahua cameras via credential attacks, auth bypass CVEs, and P2P relay techniques across Ukraine and Russia.

Hunt.io reconstructed a campaign codenamed Operation CameraSwarm that compromised over 14,530 Dahua devices between June 17 and July 22, 2026. Attack paths included credential attacks against 12,324 IPs, exploitation of CVE-2021-33044 and CVE-2021-33045 affecting 1,923 cameras, and P2P relay access to 283 devices behind NAT. The operator, assessed as Russian-speaking, left behind 2,616 files including tooling and campaign logs, with confirmed compromises concentrated in Ukraine and Russia. Dahua advises factory resets and firmware updates; both 2021 CVEs remain in CISA's KEV catalog.

The Hacker NewsAug 25, 15:59 UTC · 22d agoThreat actor in the wildCVE-2021-33044 CVE-2021-33045 CVE-2024-39943+1 CVEs1

[webapps] miniOrange 5.4.3 - Unauthenticated Auth Bypass

A proof-of-concept exploit for an unauthenticated authentication bypass in miniOrange 5.4.3 has been published on Exploit-DB.

Exploit-DB lists a public proof-of-concept exploit for an unauthenticated authentication bypass in miniOrange 5.4.3. The flaw allows attackers to bypass authentication without credentials. No in-the-wild exploitation or CVE identifier is stated in the listing.

Exploit-DBSep 1, 00:00 UTC · 15d agoExploit / PoC

MikroTik router flaws allow takeover without a password

Attackers actively exploit chained MikroTik RouterOS SSH flaws CVE-2026-67276 and CVE-2026-86060, bypassing authentication and escalating to admin to seize edge routers.

CERT Polska warns of active exploitation of a two-flaw chain dubbed 'MikroTrick' against internet-exposed MikroTik RouterOS devices with SSH remote management enabled. CVE-2026-67276 is an SSH authentication bypass in RSA public-key handling, and CVE-2026-86060 is a privilege-escalation flaw triggered via a specially crafted username, letting attackers gain full administrator control without a password. Patched RouterOS packages are already public, and MikroTik added a startup detection that flags unauthorized configuration changes. Compromised edge routers enable DNS hijacking, traffic capture, remote-access tunnels, firewall changes, and lateral attacks.

Malwarebytes LabsSep 8, 09:49 UTC · 8d agoExploit / PoC in the wildCVE-2026-67276 CVE-2026-860603

Off Guard: Breaking LiteLLM from authentication bypass to cloud compromise

Wiz found LiteLLM auth bypass (CVE-2026-59822) and post-auth RCE (CVE-2026-59821) chainable to cloud compromise; the bypass is in CISA KEV with in-the-wild exploitation.

Wiz scanned roughly 3,074 internet-facing LiteLLM deployments and found 9.6% accepted the default master key sk-1234 or required no authentication, making post-auth attacks effectively pre-auth. The MCP endpoint accepts any Bearer token and grants a valid session (CVE-2026-59822), confirmed exploited in the wild via honeypots and added to CISA's Known Exploited Vulnerabilities catalog. Custom code guardrails allow post-auth root-level RCE via exec(compile(...)) (CVE-2026-59821), while pass-through endpoints lack URL validation, enabling cloud credential theft in post-auth scenarios. All assigned vulnerabilities have been patched; the research was presented at DEF CON 34.

Wiz BlogSep 9, 16:06 UTC · 7d agoExploit / PoC in the wildCVE-2026-59822 CVE-2026-598211

Philippine Nuclear and Naval Targets Hit by Suspected Chinese Operator

Suspected Chinese-speaking operator breached Philippine nuclear research and naval supplier systems via ownCloud CVE-2023-49103 and WordPress CVE-2024-28000.

Hunt.io found an exposed staging server containing custom Python scripts, logs, and stolen data documenting intrusions against a Philippine nuclear research body and a marine engineering company serving the Philippine Navy. The actor exploited an ownCloud authentication bypass (CVE-2023-49103) using empty-secret pre-signed WebDAV URLs and a LiteSpeed Cache plugin flaw (CVE-2024-28000) to gain WordPress admin access, also guessing passwords against XML-RPC with rockyou.txt. Roughly 9 GB was referenced as stolen from the nuclear agency, including reactor databases, radiation-safety records, and staff passport data; Simplified Chinese labels suggest a Chinese-speaking operator.

Security AffairsAug 29, 09:16 UTC · 18d agoThreat actor in the wildCVE-2023-49103 CVE-2024-28000

[20260807] - Core - MFA Authentication Bypass

Joomla fixed CVE-2026-73337, an MFA authentication bypass caused by insufficient state checks, affecting Joomla CMS 4.0.0-5.4.7 and 6.0.0-6.1.2.

Joomla security advisory 20260807 describes CVE-2026-73337, an authentication bypass in Joomla CMS multi-factor authentication. Insufficient state checks create a vector that allows 2FA checks to be bypassed; the vendor rates the impact as high with moderate probability. Affected versions are 4.0.0-5.4.7 and 6.0.0-6.1.2; fixes ship in 5.4.8 and 6.1.3. The issue was reported by bloman and Matej Rada on 2026-07-25.

Joomla Security CentreAug 17, 14:00 UTC · Aug 17, 2026Advisory CVE-2026-73337

TP-Link Tapo Camera Flaw Lets Attackers Gain Admin Access Without Password

Two flaws in TP-Link Tapo C200 cameras allow network-adjacent admin access without a password (CVE-2026-15315) or DoS (CVE-2026-15316); fixed in V5_1.4.6.

OPSWAT Unit 515 researchers discovered CVE-2026-15315, an authentication bypass in the Tapo C200's local HTTPS management interface on port 443, where an alternative verification path accepts a replayed device-generated value, letting unauthenticated network-adjacent attackers establish admin sessions. CVE-2026-15316 causes a denial-of-service crash in the camera's HTTPS service via oversized encrypted Wi-Fi credential data during onboarding. TP-Link confirmed both issues after the April 16, 2026 report and released firmware V5_1.4.6 on August 18, 2026. OPSWAT says additional potentially critical findings remain under coordinated disclosure.

GBHackersupdated 13:27 UTC · 6h agofirst 12:33 UTC · 7h agoVulnerability 3 sources CVE-2026-15315 CVE-2026-15316

CVE-2026-86206, CVE-2026-86207: N-able N-central Authentication Bypass (FIXED)

Rapid7 disclosed two chained N-able N-central flaws, CVE-2026-86206 and CVE-2026-86207, enabling unauthenticated admin account creation; patched in 2026.3 Hotfix 3.

Rapid7 researchers found CVE-2026-86206 (semicolon/Forwarded access-control bypass, CWE-791, CVSSv4 6.9) and CVE-2026-86207 (UserTwoFactorLogin authentication bypass, CWE-305, CVSSv4 7.7) in the latest N-able N-central. Chained, they let a remote unauthenticated attacker create an attacker-controlled System administrator account. The bugs stem from Envoy and Jetty disagreeing on the requested path and whether the client is local. N-able patched both in N-central 2026.3 Hotfix 3, following the earlier CVE-2026-18577 authentication bypass.

Rapid7 BlogSep 8, 11:01 UTC · 8d agoVulnerability CVE-2026-86206 CVE-2026-86207 CVE-2026-18577

Sandworm-Linked Cyclops Blink Returns With Network Scanning and Packet-Sniffing Capabilities

Sophos uncovers a 64-bit Cyclops Blink variant on hacked Cisco FMC appliances, adding internal network scanning and selective packet capture; linked to Sandworm.

Sophos CTU analyzed a new 64-bit x86-64 Cyclops Blink implant (timezone_check) deployed on Cisco Secure Firewall Management Center appliances compromised via CVE-2026-20079 authentication bypass and CVE-2026-20316 low-privileged login. The activity is assessed with high confidence as Russian-nexus, with a moderate-confidence link to Sandworm (IRON VIKING, also tracked as Seashell Blizzard). The implant runs a parent controller plus five worker modules, masquerades as [kworker/0:1], persists via SysV init scripts at /lib/tz/timezone_check, and beacons to hard-coded C2 89.34.96.56 over a custom TLS protocol on ports 43856 and 49172. New module 0x11 scans internal IPv4 networks for SSH, SMB, LDAP, VMware, HTTP/HTTPS and VPN services, while module 0x12 performs filtered packet capture that can expose cleartext credentials, cookies and tokens.

GBHackersSep 14, 09:27 UTC · 2d agoMalware in the wild 10 sources CVE-2026-20079 CVE-2026-20316

JSCeal Malware Can Bypass Google Authentication Using Stolen Session Cookies

Check Point details JSCeal, a V8-compiled JavaScript stealer that replays stolen cookies to bypass Google authentication, spread via crypto malvertising.

Check Point Research's new report analyzes JSCeal, a compiled V8 JavaScript malware obfuscated with javascript-obfuscator using RC4-protected strings, control-flow flattening, and proxy functions. Delivered through fake TradingView installers on malvertising sites overlapping the WEEVILPROXY/MeadowLocust and SourTrade campaigns, it harvests cookies, passwords and OAuth tokens from Chromium browsers, records keystrokes and screenshots, and can replay stolen Google session cookies to bypass authentication. It also installs a local proxy with service-specific handlers for Binance, Bybit, and Ledger to intercept and modify cryptocurrency-related traffic.

The Hacker NewsSep 7, 07:53 UTC · 9d agoMalware in the wild1

Microsoft Patches 398 Flaws Including a Windows Driver Zero

Microsoft's August Patch Tuesday fixes 398 CVEs, including actively exploited Windows zero-day CVE-2026-68820 used by Lazarus for SYSTEM privilege escalation.

Microsoft's August 2026 Patch Tuesday release addresses 398 new vulnerabilities, 62 rated Critical by the Zero Day Initiative, with CVE-2026-68820 (CVSS 7.0), a use-after-free in the afd.sys Windows kernel driver, the only flaw flagged as actively exploited. Check Point Research attributed exploitation of the privilege escalation bug to Lazarus' Operation Dream Job campaign. Four unauthenticated remote code execution flaws rated 9.8 affect Windows DNS Server (CVE-2026-62878, called wormable by ZDI), Windows Deployment Services (CVE-2026-62893), Microsoft QUIC (CVE-2026-62815) and HPC Pack (CVE-2026-59124). The release also completes a two-part SharePoint fix with RCE component CVE-2026-63520, following July's authentication bypass fix CVE-2026-55040.

The Hacker NewsAug 11, 20:10 UTC · Aug 11, 2026Exploit / PoC in the wildCVE-2026-68820 CVE-2026-62878 CVE-2026-62893+4 CVEs

Wordfence Argus Finds Critical Authentication Bypass in WPMU DEV Dashboard Plugin

Wordfence researchers disclosed a critical unauthenticated authentication bypass in the WPMU DEV Dashboard plugin, enabling admin takeover and possible RCE.

During internal research on August 19, 2026, Wordfence discovered an authentication bypass in the WPMU DEV Dashboard WordPress plugin, which has roughly 350,000 active installations. Unauthenticated attackers can gain administrator access when Hub Single-Sign On is enabled, enabling complete site takeover. If an administrator-writable code mechanism such as the plugin or theme editor is available, the flaw can lead to remote code execution.

WordfenceAug 27, 17:41 UTC · 20d agoVulnerability

Inside Operation CameraSwarm: How One Actor Took Over 14,000 Dahua Cameras

One actor compromised over 14,000 Dahua cameras in Ukraine and Russia using brute-force, authentication bypass, and cloud relay serial-number abuse.

Hunt.io reconstructed Operation CameraSwarm from an exposed operator directory, revealing one actor compromised 14,000+ Dahua cameras between June 17 and July 22, 2026, mainly in Ukraine and Russia. The toolkit included a brute-force engine, a two-flaw 2021 authentication-bypass chain planting a persistent backdoor account on 1,923 cameras, and abuse of Dahua's cloud relay where 89.4% of probed serials returned open, unauthenticated channels. A SalatStealer Windows binary and Defender-disabling PowerShell script were staged on the same server but appear unrelated to the camera campaign.

Security AffairsAug 19, 17:37 UTC · 28d agoThreat actor in the wildCVE-2024-39943 CVE-2025-31702

Cisco Secure Firewall Management Center Software Authentication Bypass Vulnerability

Cisco warns of a critical authentication bypass in Secure Firewall Management Center that lets unauthenticated attackers execute scripts and obtain root access.

A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software allows an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system. The flaw stems from an improper system process created at boot time and is triggered via crafted HTTP requests. If the FMC management interface does not have public internet access, the attack surface is limited.

Cisco Security AdvisoriesSep 9, 16:00 UTC · 7d agoAdvisory 2 sources CVE-2026-20079

More JFrog Artifactory bugs under attack, and all 3 have patches

Multiple attackers are exploiting three JFrog Artifactory CVEs, including critical auth-bypass CVE-2026-82329, to gain admin access and install backdoors.

Wiz confirmed in-the-wild exploitation of all three JFrog Artifactory vulnerabilities: CVE-2026-42018 (high, improper authentication token leak), CVE-2026-42016 (high, privilege escalation), and CVE-2026-82329 (critical, unauthenticated authentication bypass). Starting August 15, attackers chained the first two bugs against self-hosted instances to gain admin access and dropped a custom Rust backdoor for C2; from September 1-8 several attackers exploited CVE-2026-82329. Post-exploitation included persistent admin accounts, Groovy plugins for remote code execution, web shells, token minting, key theft, and reconnaissance. Patching velocity has been slow, with 49-62% of organizations still vulnerable to individual bugs weeks after fixes were released.

The Register · Securityupdated Sep 14, 09:27 UTC · 2d agofirst Sep 11, 17:43 UTC · 5d agoExploit / PoC in the wild 7 sources CVE-2026-42018 CVE-2026-42016 CVE-2026-82329

Critical Check Point VPN Flaws Let Unauthenticated Attackers Execute Remote Code

Check Point fixed critical unauthenticated RCE flaws CVE-2026-85102 and CVE-2026-85103 in its VPN gateways; no exploitation observed yet.

Check Point disclosed two critical vulnerabilities affecting Remote Access VPN and Site-to-Site VPN on its security gateways. CVE-2026-85102 is an authentication-bypass flaw that can lead to unauthenticated remote code execution, while CVE-2026-85103 is a heap overflow in ASN.1 decoding that can corrupt memory and also result in RCE. Fixes are available via Jumbo Hotfix, with Check Point Live Patch rollout starting September 9, 2026; the vendor found and fixed the issues through internal research and reports no evidence of exploitation in the wild.

GBHackersupdated 17:14 UTC · 3h agofirst Sep 11, 05:23 UTC · 5d agoVulnerability 9 sources CVE-2026-85102 CVE-2026-85103

ZDI-26-533: Cisco Secure Firewall Management Center login.cgi Authentication Bypass Vulnerability

ZDI discloses CVE-2026-20316, a 9.8-rated unauthenticated authentication bypass in Cisco Secure Firewall Management Center login.cgi.

ZDI-26-533 describes an authentication bypass vulnerability in Cisco Secure Firewall Management Center's login.cgi that allows remote attackers to bypass authentication without any credentials. ZDI assigned a CVSS score of 9.8, and the flaw is tracked as CVE-2026-20316. As a central management plane for firewall infrastructure, compromise could enable broad policy changes.

ZDI Published AdvisoriesAug 11, 05:00 UTC · Aug 11, 2026Vulnerability CVE-2026-20316

Attackers Exploit PaperCut Flaws to Steal Credentials From Schools and Universities

Attackers exploit newly disclosed PaperCut auth bypass CVE-2026-81578 and RCE CVE-2026-82078 to steal credentials from schools and universities in the US and Europe.

Arctic Wolf observed threat actors chaining CVE-2026-81578 (authentication bypass) and CVE-2026-82078 (remote code execution) in PaperCut to execute commands, perform reconnaissance, and create privileged accounts on servers at K-12 schools and universities in the US and Europe. Post-exploitation includes registry hive collection with lsa_collect.exe delivered via certutil, Meterpreter Java payloads from 194.180.48.134, and searches of PaperCut config files for passwords, LDAP bindings, and tokens. Stolen logins could provide a pathway into other critical systems across compromised environments.

The Hacker NewsSep 5, 07:31 UTC · 11d agoExploit / PoC in the wildCVE-2026-81578 CVE-2026-820781

sk185169 - CVE-2026-16232 - Authentication bypass with SmartConsole ...

Check Point issued a high-severity alert for CVE-2026-16232, an authentication bypass in the SmartConsole login process via application token.

Check Point published support article sk185169 describing CVE-2026-16232, an authentication bypass affecting the SmartConsole login process when using application tokens. The vendor rates the issue High. The brief advisory text provides no exploitation details, CVSS score, or affected-version list.

Web discovery (articles for new exploits & KEV entries)Sep 8, 09:04 UTC · 8d agoVulnerability CVE-2026-16232

VU#889462: Casdoor authentication server is vulnerable to authorization bypass

Casdoor IAM versions 3.115.0 and earlier allow organization admins to bypass tenant isolation through inconsistent authorization checks, tracked as CVE-2026-15630.

CERT/CC published VU#889462 describing an authorization bypass in Casdoor, an open-source access management platform, affecting versions 3.115.0 and earlier. The flaw (CVE-2026-15630) stems from controllers ignoring the ?id= query parameter used for authorization decisions and acting on JSON body fields instead, letting a single-organization administrator perform unauthorized administrative actions against arbitrary organizations in multi-tenant deployments. Impact can escalate to complete tenant-isolation compromise and potential compromise of the entire Casdoor instance, including SSO/SAML disruption. No vendor patch is available because researchers could not reach Casdoor; mitigations include least privilege, MFA for admin accounts, and alerting on cross-organization administrative activity.

CERT/CC Vulnerability NotesSep 3, 17:03 UTC · 13d agoVulnerability CVE-2026-15630

Cisco BroadWorks CommPilot Application Software Authorization Bypass Vulnerability

Cisco patched a BroadWorks CommPilot authorization bypass letting low-privileged authenticated users alter device configurations via crafted HTTP requests.

A vulnerability in the web-based management interface of Cisco BroadWorks CommPilot Application Software is caused by missing authorization checks. An authenticated remote attacker with low privileges can send crafted HTTP requests to alter configurations on select pages. Cisco has released software updates and no workarounds are available.

Cisco Security Advisories16:00 UTC · 4h agoAdvisory

CVE-2026-16232: Checkpoint Quantum Security Management auth bypass ...

Attackers exploit Check Point SmartConsole authentication bypass CVE-2026-16232 to take over Quantum Security Management firewall servers; CISA added it to KEV.

CVE-2026-16232 is an authentication bypass (CWE-287) in the SmartConsole login process of Check Point Quantum Security Management, exploitable via an application token. Disclosed July 22, 2026, it was added to CISA's Known Exploited Vulnerabilities catalog the same day with remediation due July 25. Rapid7, Check Point Research and other vendors confirmed exploitation in the wild, and a public PoC was released. A workaround is available, and federal agencies must comply with BOD 26-04 patching guidance.

Web discovery (articles for new exploits & KEV entries)Sep 5, 08:03 UTC · 11d agoExploit / PoC in the wildCVE-2026-16232

SimpleHelp OpenID Connect Auth Bypass to RCE [CVE-2026-48558]

Metasploit adds a module chaining SimpleHelp OpenID Connect authentication bypass to remote code execution, tracked as CVE-2026-48558.

A commit to the Rapid7 Metasploit Framework (dee04cdb) adds an exploit module for CVE-2026-48558, an OpenID Connect authentication bypass in SimpleHelp that can be escalated to remote code execution. SimpleHelp is widely deployed remote access and remote support software, making the auth bypass a serious exposure for exposed deployments. The commit provides public exploit code but the listing does not state observed exploitation.

Metasploit Framework commitsSep 1, 20:43 UTC · 14d agoExploit / PoC CVE-2026-485581

Two CVSS 9.8 Auth Bypasses in miniOrange SAML WordPress Plugin Were Exploited Before Any Database Even Listed the Paid Editions as Vulnerable

Attackers actively exploit two CVSS 9.8 auth bypasses (CVE-2026-61979, CVE-2026-15981) in the miniOrange SAML WordPress plugin, forging SAML responses to become admin.

CVE-2026-61979 is a SAML algorithm confusion flaw that lets attackers sign forged assertions using the identity provider's RSA public key as an HMAC secret; CVE-2026-15981 stems from PHP treating openssl_verify()'s -1 error return as true, allowing a crafted signature that triggers an OpenSSL error to validate. Both bugs independently let unauthenticated attackers obtain WordPress administrator sessions and both are confirmed exploited in the wild. DigitalOcean discovered the exploitation via a network anomaly after public vulnerability databases covered only the Free edition (fixed in 5.4.5), leaving seven independently versioned paid editions appearing patched. Attackers are scanning SSO endpoints from six IPs in Belgium, Nigeria, the US and Germany, and paid-edition fixes require manual uploads across version lines.

Security AffairsAug 25, 16:43 UTC · 22d agoExploit / PoC in the wildCVE-2026-61979 CVE-2026-15981

Citrix urges customers to fix critical NetScaler authentication bypass (CVE-2026-19490)

Citrix patched a critical authentication bypass, CVE-2026-19490, in NetScaler Gateway and NetScaler ADC, urging customers to upgrade immediately.

Citrix has patched two flaws in NetScaler ADC and NetScaler Gateway. CVE-2026-19490 is a critical authentication bypass (CVSS v4.0 9.3) that works when the appliance is configured as an SSL VPN, ICA Proxy, CVPN, RDP Proxy Gateway or AAA virtual server, with additional conditions depending on firmware and SAML configuration. A second flaw, CVE-2026-19489 (CVSS 8.8), is a memory overflow that can cause denial of service when SIP ALG is enabled on LSN setups. Rapid7 had not observed exploitation as of August 19, 2026, but urged emergency patching; a signature-based mitigation is available via NetScaler Console.

Help Net SecurityAug 21, 00:00 UTC · 26d agoVulnerability CVE-2026-19490 CVE-2026-19489

Three Critical VMware Flaws Allow Auth Bypass, Code Execution, and VM Escape

Broadcom patches three critical VMware flaws, including vCenter auth bypass CVE-2026-59309 and an ESX VM escape, urging immediate updates.

Broadcom issued emergency updates for VMware ESX, vCenter, Workstation and Fusion, fixing five flaws including CVE-2026-59309 (CVSS 9.8 authentication bypass in vCenter) and CVE-2026-59310 (CVSS 9.8 directory traversal allowing code execution). CVE-2026-47876 (CVSS 9.3) is an out-of-bounds write in the ESX VMXNET3 adapter that permits a virtual machine escape to the host. Broadcom found no evidence of exploitation, but Defused Cyber reported a spike in vCenter scanning on August 11, 2026 consistent with exploitation attempts against CVE-2026-59309 (VMSA-2026-0006). No workarounds are available.

The Hacker NewsAug 11, 15:42 UTC · Aug 11, 2026Vulnerability CVE-2026-59309 CVE-2026-59310 CVE-2026-47876+2 CVEs1

Rapid7 Analysis: Microsoft SharePoint JWT Token Authentication Bypass (CVE-2026-55040)

Rapid7's analysis of SharePoint auth bypass CVE-2026-55040 includes a PoC for unauthenticated admin-level operations.

Rapid7 and Microsoft disclosed CVE-2026-55040, an authentication bypass in Microsoft SharePoint, on July 14, 2026. The flaw stems from multiple issues in SharePoint's JWT token validation pipeline, allowing a remote unauthenticated attacker to bypass authentication and perform operations as a site user or administrator. Rapid7 has now published a technical analysis and a proof-of-concept script, based on SharePoint Server Subscription Edition.

Rapid7 BlogAug 11, 13:00 UTC · Aug 11, 2026Vulnerability CVE-2026-550401

CVE-2026-86304: MojoX::Authentication versions before 0.006 for Perl allow SAML authentication bypass because parse_assertion builds Net::SAML2::Binding::POST without a trust anchor

MojoX::Authentication before 0.006 for Perl allows SAML authentication bypass because parse_assertion builds Net::SAML2::Binding::POST without a trust anchor (CVE-2026-86304).

CVE-2026-86304 affects MojoX::Authentication versions before 0.006 for Perl. The parse_assertion function builds Net::SAML2::Binding::POST without a trust anchor, so SAML assertions are not validated against a trusted signing key, enabling authentication bypass. The flaw is fixed in version 0.006 of the module.

oss-securitySep 6, 23:14 UTC · 9d agoVulnerability CVE-2026-86304

Critical ArangoDB Flaws Allow Authentication Bypass and Remote Code Execution as Root

Two critical ArangoDB flaws (CVSS 9.8 and 9.9) enable unauthenticated API access and root code execution; fixes shipped in version 3.12.11

Remedio researchers found two ArangoDB flaws: GHSA-rrgq-978q-36mq (CVSS 9.8), an authentication bypass caused by the server inconsistently interpreting URL-encoded '/_api' paths, and GHSA-rvhw-4hpw-9vrx (CVSS 9.9), which lets users with database write access run JavaScript tasks with root privileges via the isSystem flag. Chained, they allow administrative database access without credentials, theft of the root password hash, and root code execution, exposing files such as /etc/shadow, TLS keys and cluster signing material on the official container image. ArangoDB shipped fixes in version 3.12.11 on August 31, 2026, with advisories published September 6; CVE identifiers were still pending. Users on 3.12.10.1 or earlier should upgrade, restrict exposure and rotate potentially exposed credentials.

Cyber Security NewsSep 9, 13:50 UTC · 7d agoVulnerability

CISA Warns of Citrix NetScaler Authentication Bypass Vulnerability Exploited in Attacks

CISA adds exploited Citrix NetScaler authentication bypass CVE-2026-19490 to the KEV catalog; federal agencies must patch by September 12.

CISA added CVE-2026-19490, a CWE-288 authentication bypass affecting NetScaler ADC and Gateway deployments configured as AAA virtual servers or Gateway services (including SSL VPN, ICA Proxy, and RDP Proxy), to the Known Exploited Vulnerabilities catalog. Citrix released fixes on August 19, 2026; honeypots recorded 56 attack attempts between September 3 and 8 after a public PoC, though no confirmed production compromises have been reported. Affected builds include 14.1 before 14.1-73.32 and 13.1 before 13.1-63.21; newer installations require SAML IdP configuration to be exposed.

Cyber Security Newsupdated Sep 10, 18:57 UTC · 6d agofirst Sep 10, 13:23 UTC · 6d agoExploit / PoC in the wild 5 sources CVE-2026-19490

Critical WSO2 Vulnerability Allow Hackers to Gain Full Admin Access

WSO2 discloses CVE-2026-5430 (CVSS 10.0), an unauthenticated JWT authentication bypass allowing admin account takeover across its API management products.

WSO2 disclosed CVE-2026-5430, a critical authentication bypass (CVSS 10.0; 9.8 for single-tenant deployments) in advisory WSO2-2026-5328. The flaw stems from insecure JWT processing: tokens signed with unsupported algorithms bypass authentication checks, potentially granting unauthenticated attackers administrative access. Affected products include WSO2 API Control Plane 4.5.0-4.6.0, API Manager 4.1.0-4.6.0, Traffic Manager 4.5.0-4.6.0, and Universal Gateway 4.5.0-4.6.0. Fixes are available via update levels such as API Manager 4.6.0 update 21 or by migrating to unaffected releases.

Cyber Security News15:05 UTC · 5h agoVulnerability 3 sources CVE-2026-5430

BigBear Microsoft 365 phishing service bypassed MFA at 258 organizations

CloudSEK found the BigBear 2.0 phishing-as-a-service platform bypassed MFA at 258 organizations and captured over 5,000 Microsoft 365 credentials.

CloudSEK researchers gained administrator access to the BigBear 2.0 phishing-as-a-service control panel and found it had exfiltrated 5,137 credential records, including 474 completed MFA-bypassed authentications, 1,032 plaintext passwords, and 4,148 session cookies across 3,331 victim IPs in 40+ countries. The Evilginx2-based AitM proxy intercepts credentials and authenticated session cookies, and custom JavaScript interferes with FIDO2/WebAuthn to force weaker authentication. The panel is leased to at least five affiliate operators via Telegram exfiltration bots, and geo-matched residential proxies cover 69 countries to evade detection.

BleepingComputerSep 7, 15:39 UTC · 9d agoPhishing & fraud in the wild1