Search: “web-client”

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

Re: CVE-2026-82434: Apache Storm Nimbus, Apache Storm Client: Disclosure of the Topology ZooKeeper Credential to Read-Only Users and to Logs

Follow-up on oss-security asks why CVE-2026-82434, Apache Storm ZooKeeper credential disclosure to read-only users and logs, lacks a severity rating.

Gabriel Ravier replied to the oss-security disclosure thread for CVE-2026-82434, which affects Apache Storm Nimbus and Apache Storm Client. The vulnerability involves disclosure of the topology ZooKeeper credential to read-only users and to logs. The reply questions whether the CVE was filed without a severity rating or if it is simply missing from the listing. No exploitation details or affected versions are provided in the post.

oss-security·Sep 13, 19:51 UTC · 2d agoVulnerability 2 sourcesCVE-2026-82434

15

Modified ScreenConnect Clients Used in Worm-Like Campaign

Huntress warns of worm-like attacks using modified ScreenConnect clients to spread VBScript payloads; ConnectWise issued an advisory.

Campaigns starting in late August use social engineering, including Quick Assist abuse, to install rogue ScreenConnect clients that spawn wscript.exe and deploy four VBScript files for reconnaissance, staging, and PowerShell execution. The attackers persist via User Run Keys, attempt UAC bypass, install UltraViewer, and propagate the VBScript chain to other connected ScreenConnect endpoints. ConnectWise published an advisory about a file transfer behavior issue affecting cloud and on-premises ScreenConnect, with a CVE identifier and fix expected within a week; it recommends disabling file transfer meanwhile.

SecurityWeek·Sep 7, 11:45 UTC · 9d agoExploit / PoC in the wild

66

Citrix adds AI-powered browser activity analysis to SecurAccess

Citrix launched Session Insights for SecurAccess with Chrome Enterprise, using AI to record and analyze browser activity from users and autonomous agents.

Citrix Session Insights adds automatic session recording and AI-powered risk detection for browser activity by human users and autonomous AI agents within Citrix SecurAccess with Chrome Enterprise. The capability creates visual forensic records, highlights risky behavior for faster investigations, and recommends policy adjustments or changes to agent authority levels. It is designed to support audits and governance as enterprise AI agent workflows expand.

Help Net Security·10:14 UTC · 7h agoTools

30

Rogue ScreenConnect Clients Spread Four-Stage VBScript Chain to Newly Connected Hosts

Huntress says rogue ScreenConnect clients spread a four-stage VBScript chain delivering backdoors, privilege-escalation tools, or an XMRig miner to newly connected hosts.

Huntress identified three unrelated August 2026 incidents using a Quick Assist tech-support scam, a phishing-delivered MSI installer, and a fake Geek Squad refund form to install rogue ScreenConnect clients. Each client repeatedly spawned wscript.exe to run 1.vbs through 4.vbs, which profiled the host, enumerated installed security products, and downloaded stage-specific payloads from Dropbox. Depending on detected state, payloads included a user-level ScreenConnect backdoor, UAC-bypass privilege escalation tooling, or tunneling utilities with an XMRig cryptocurrency miner. Infected clients re-infected newly connected hosts, creating worm-like propagation, and ConnectWise issued an advisory about affected file transfer behavior in ScreenConnect.

The Hacker News·Sep 7, 11:36 UTC · 9d agoMalware in the wild

72

Chrome adopts what may be the best protection yet against account takeovers

Chrome adopts device-bound session credentials that tie login sessions to a specific device, defending against cookie-theft account takeover attacks.

Chrome is adopting device-bound session credentials, which bind authenticated sessions to the physical device rather than to transferable cookies. The mechanism targets a common account takeover technique in which attackers steal session cookies and replay them on other machines. Ars Technica characterizes it as possibly the strongest protection yet against this class of takeover, which has become increasingly common.

Ars Technica · Security·Aug 11, 20:59 UTC · Aug 11, 2026Tools

48

VU#308749: Remote Code Execution and Arbitrary File Read Vulnerabilities in Kaltura Servers

Insecure deserialization in Kaltura's legacy HTML5 Player V2 (mwEmbed) allows arbitrary file read and remote code execution; Player V7 is unaffected.

CERT/CC issued VU#308749 for two flaws in Kaltura's HTML5 Player V2 library (mwEmbed/html5lib), both caused by the same insecure deserialization bug. The flaws enable arbitrary file read and remote code execution via the exposed mwEmbedLoader.php endpoint. Affected versions include html5lib v2.45, v2.103 and earlier, and other v2.x releases; the currently supported Player V7 is unaffected. No evidence of exploitation was cited.

CERT/CC Vulnerability Notes·Aug 25, 16:11 UTC · 22d agoVulnerability

50

27.5KB language-agnostic WebGPU syntax highlighter

A developer released gpu-lexer, a 27.5KB language-agnostic syntax highlighter that uses a tiny WebGPU model to label code tokens in the browser.

gpu-lexer splits source into words, whitespace, and symbols, then a small WebGPU model uses local and whole-file context to assign nine token classes, working on languages never seen in training. On held-out files, 12.57% of token labels differ from Shiki, though this measures agreement with Shiki rather than objective correctness. In benchmarks against Shiki 4.4.3, Prism.js, Highlight.js, Sugar High, and Starry Night, it highlighted 10 concatenated copies of three.min.js (5.56M characters) about 10x faster on an Apple M4 Pro in Chrome 152. The author frames it as an experiment, not a grammar-equivalent highlighter.

Hacker News · security·Sep 9, 01:14 UTC · 7d agoAI tools & infraHN 21↑ · 5 comments1

15

Phishing Attacks Serve Browser-in-the-Browser Pages, Rogue RMM Persistence

Phishing emails with browser-in-the-browser fake Adobe pages trick users into installing rogue ScreenConnect clients granting persistent remote access.

Huntress SOC investigated two August incidents where phishing links led to fake CAPTCHA checks and Adobe PDF Reader lures rendered as browser-in-the-browser (BiTB) pages spoofing legitimate domains like get.adobe.com. Victims downloaded what they believed was Acrobat Reader but actually installed ScreenConnect.ClientSetup.exe from attacker infrastructure, yielding two rogue ScreenConnect clients with service-based persistence. The attacker used cmd.exe and curl to stage a second client connecting to 144.172.115.59, leveraged a ScreenConnect Trial Relay domain for stealth, and ran HideCursor.exe as a defense-evasion binary. Incident 2 arrived via AT&T Office@Hand (RingCentral), with both chains stopped before broader impact.

Huntress·Sep 9, 13:00 UTC · 7d agoPhishing & fraud in the wild

52

Attackers use rogue ScreenConnect clients to spread malware

Attackers deploy rogue ScreenConnect clients that spread VBScript malware to newly connected machines while ConnectWise patches a file-transfer flaw.

ConnectWise confirmed a file transfer flaw in ScreenConnect affecting both Cloud and On-Premise deployments, with a CVE identifier and official fix promised within the week; administrators can mitigate immediately by disabling TransferFiles (or TransferFilesInSession) in each role. Huntress documented incidents where social engineering installs rogue ScreenConnect clients that spawn Windows Script Host processes running four VBScript files (1.vbs-4.vbs), add a WindowsServiceHost registry Run key, and propagate to newly connected endpoints. Payloads enabled host profiling, persistence, additional ScreenConnect installs, tunneling, security-control changes, and cryptocurrency mining. ConnectWise has not confirmed a technical link between the flaw and this campaign.

Help Net Security·Sep 7, 00:00 UTC · 9d agoExploit / PoC in the wild

76

ZDI-26-588: Fabric.js loadFromJSON Server-Side Request Forgery Vulnerability

ZDI disclosed a server-side request forgery in Fabric.js loadFromJSON (CVE-2026-19504) that can leak sensitive information from affected implementations.

Zero Day Initiative advisory ZDI-26-588 describes a server-side request forgery vulnerability in the Fabric.js canvas library's loadFromJSON function. Exploitation requires interaction with the library and attack vectors vary by implementation, potentially exposing sensitive information. The issue is rated 4.0 on the CVSS scale and tracked as CVE-2026-19504. The advisory does not report exploitation in the wild.

ZDI Published Advisories·Aug 24, 05:00 UTC · 23d agoVulnerabilityCVE-2026-19504

15

Jellyfin 12.0 security fixes arrive alongside the removal of legacy client logins

Jellyfin 12.0 ships security fixes for path traversal, first-run setup bypass, unsafe plugin names, and web client XSS, plus removal of legacy login paths.

Jellyfin 12.0 blocks requests built to reach files outside served folders, prevents setup-wizard re-runs on misconfigured servers, rejects unsafe plugin package names, and fixes web client cross-site scripting. The project published no CVE identifiers or severity ratings for the fixes. The release also drops legacy /emby/ and /mediabrowser/ endpoints, targets .NET 10, and breaks 10.11-era third-party plugins.

Help Net Security·Sep 8, 08:41 UTC · 8d agoVulnerability

28

PEEP Turns Chrome and Edge Into Post-Compromise Backdoors for Host Command Execution

SOCRadar disclosed PEEP, a post-exploitation Chromium extension toolkit that turns Chrome and Edge into host-level backdoors via native messaging and C2 polling.

SOCRadar researchers detailed PEEP, a Chromium-based post-exploitation toolkit masquerading as a 'Smart Bookmarks' extension injected directly into Chrome and Edge profiles by forging Secure Preferences integrity values, bypassing Web Store checks. A native-messaging host binary (nm_host.exe) extends the browser agent to host-level command execution, file management, credential theft, and session hijacking, while the extension polls C2 endpoints at 206.237.30.232 or xfjcc.fun every 30 seconds over plaintext HTTP and exfiltrates browsing history, cookies, and tab metadata. PEEP is derived from the open-source RedExt red teaming framework, adds PowerShell persistence scripts, and includes a Linux-targeting Python script, suggesting cross-platform intent. The activity is unattributed but contains Chinese-language artifacts; a C2 /health endpoint showed 34 agent entries and 10 active sessions.

The Hacker News·Sep 7, 18:12 UTC · 8d agoMalware in the wild1

72

Top 10 Best Browser Isolation Solutions in 2026

A 2026 market overview ranks ten remote browser isolation tools, with Menlo Security as the pure-play reference as SSE vendors bundle isolation.

The article compares ten remote browser isolation (RBI) options, including Menlo Security, Zscaler, Cloudflare, Palo Alto Networks, Broadcom (Symantec), Forcepoint, Skyhigh Security, Ericom (Cradlepoint), Authentic8, and Garrison. It argues that RBI has become a bundled policy action inside SSE platforms from Zscaler, Cloudflare, Palo Alto, Broadcom, Forcepoint, and Skyhigh, compressing standalone pricing and driving consolidation such as Ericom's isolation moving under Cradlepoint (Ericsson). Enterprise browsers like Island and Chrome Enterprise Premium are reshaping the RBI-versus-browser decision for managed users, while selective policy-driven isolation of risky categories is described as the prevailing 2026 architecture. The piece is a buyer's guide with vendor positioning, not an incident or vulnerability report.

Cyber Security News·Sep 11, 07:01 UTC · 5d agoIndustry

12

CVE-2026-82438: Apache Storm Webapp: Authenticated API Responses Exposed to Arbitrary Web Origins

Three CORS misconfigurations in Apache Storm 3.0.0 let malicious web pages from arbitrary origins read authenticated API responses.

CVE-2026-82438 (severity: important) affects Apache Storm Webapp (storm-webapp) versions 3.0.0 before 3.1.0. Three separate mechanisms allowed a web page on an unrelated origin to read responses served to authenticated users, including the Logviewer reflecting the request's Origin header in Access-Control-Allow-Origin while also sending Access-Control-Allow-Credentials. This enables a malicious site to silently exfiltrate authenticated Storm API and log data from a victim's browser session.

oss-security·Sep 13, 14:39 UTC · 3d agoVulnerabilityCVE-2026-824381

30

Third-Party Script Security: How Tags, Pixels, and Embeds Can Put Websites at Risk

Sucuri details how third-party tags, pixels, and embeds expand website attack surface, letting compromised vendors read data and alter pages.

The article explains that third-party scripts used for analytics, ads, chat, payments, and video can read page content, collect visitor data, and change what users see. A compromise of the vendor, account, or integration configuration can affect every page loading the script. It recommends inventorying scripts, understanding their purpose and ownership, and detecting unexpected changes rather than removing useful integrations.

Sucuri Blog·Aug 24, 22:31 UTC · 22d agoResearch

22

You’re Back In The Room (Citrix NetScaler Pre-Auth RCE CVE-2026-8452(?))

watchTowr Labs details a pre-authentication remote code execution flaw, tracked as CVE-2026-8452, in Citrix NetScaler appliances.

watchTowr Labs published technical analysis of a pre-authentication remote code execution vulnerability in Citrix NetScaler, tentatively assigned CVE-2026-8452. The CVE identifier is marked as provisional in the write-up. No confirmation of in-the-wild exploitation is provided in the available text.

watchTowr Labs·Aug 14, 07:08 UTC · Aug 14, 2026Exploit / PoCCVE-2026-8452

62

Prisma Cloud WAAS Archives

Unit 42 archive page for Prisma Cloud WAAS, Palo Alto's web application and API security module; contains no new findings.

This is a product category archive page from Unit 42 describing Prisma Cloud Web Application and API Security (WAAS). It advertises protection spanning the OWASP Top 10, API protection, risk profiling, file upload and geolocation controls for cloud-native architectures. No new research findings, incidents, or vulnerabilities are reported.

Palo Alto Unit 42·Aug 17, 12:19 UTC · Aug 17, 2026Industry

10

Webinar: How malicious OAuth apps can lead to Google Workspace breaches

BleepingComputer webinar will dissect two Google Workspace breaches caused by malicious OAuth apps and social engineering, hosted September 23 with Material Security.

On September 23, 2026, BleepingComputer will host a webinar with Material Security examining two real attacks that used malicious OAuth applications and social engineering to breach Google Workspace environments. Rather than stealing credentials, attackers persuaded users to authorize malicious apps, gaining access to data through the granted permissions. The session covers first-hour response decisions and which security controls provide the greatest value for fast-growing organizations.

BleepingComputer·Sep 14, 12:15 UTC · 2d agoPhishing & fraud

15

PrivAudit: A Dual-Lens Auditing Framework for Website Privacy Practices under the CCPA

PrivAudit framework audits 998 websites for CCPA compliance, finding stronger disclosures but pervasive, weakly responsive third-party cookie tracking.

PrivAudit is an automated dual-lens auditing framework combining LLM-based analysis of privacy policies grounded in CCPA provisions with automated browser measurements of cookie writes under diverse privacy configurations. Applied to 998 websites, it finds CCPA-subject sites disclose opt-outs, data sharing, and user rights more frequently, yet tracking remains pervasive: 6,392 targeting cookies, 49% third-party writes. Cookies show limited-to-moderate responsiveness to privacy signals and consent choices even when sites claim to honor them. The framework is open-sourced and shared with regulators.

arXiv cs.CR·Sep 9, 04:31 UTC · 7d agoResearch

20

Hackers Abuse Google CAPTCHA, WebDAV and BNB Smart Chain to Deploy Credential-Stealing Malware

Cisco Talos details ClickFix campaigns abusing fake Google CAPTCHA prompts, WebDAV and BNB Smart Chain to deploy the Amatera infostealer.

Cisco Talos identified a multi-stage campaign, first observed in April 2026 when a Ukrainian government organization executed a disguised DLL named verification.google from a WebDAV path. The chain combines ClearFake JavaScript injected via malicious Cloudflare Workers, EtherHiding payloads stored in BNB Smart Chain contracts, ClickFix social engineering, and WebDAV-hosted DLL loaders to deliver the Amatera (ACR Stealer) infostealer. The Amatera configuration contained over 400 collection entries targeting browsers, messengers, crypto wallets, password managers, FTP and VPN tools, hunting for .kdbx, .p12, .pfx and .pem files. The pf.ch branch deploys ZigCryptoStealer, an EDR-terminating vulnerable driver and Go-based reverse TCP proxies, while the verification.google branch installs NetSupport Manager, supporting moderate-confidence attribution of the UAT-10820 activity to a Russian actor.

GBHackers·Sep 9, 13:27 UTC · 7d agoMalware in the wild

55

[webapps] webpack_devserver 5.2.5 - CSRF

Exploit-DB published a cross-site request forgery proof of concept for webpack_devserver 5.2.5.

Exploit-DB lists a webapps CSRF proof-of-concept against webpack_devserver version 5.2.5. The flaw affects the local webpack development server, where cross-site requests could be issued against it. No CVE id is cited in the entry and no active exploitation is reported.

Exploit-DB·Aug 17, 00:00 UTC · Aug 17, 2026Exploit / PoC

20

CVE-2026-74761: Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Spoofing of RemoveSubscription clientId

Apache ActiveMQ CVE-2026-74761: moderate clientId spoofing in RemoveSubscription handling, affecting Broker, All and apache-activemq, fixed in 6.3.2 and 5.19.11.

The Apache ActiveMQ team disclosed CVE-2026-74761, a moderate-severity spoofing issue in the handling of RemoveSubscription clientId. Affected components include ActiveMQ Broker (activemq-broker), ActiveMQ All (activemq-all) and Apache ActiveMQ in versions 6.0.0 before 6.3.2 and 5.x before 5.19.11. The flaw could allow a client to spoof another client's clientId when removing subscriptions. Users should upgrade to the 6.3.2 or 5.19.11 release lines or later.

oss-security·Sep 8, 15:48 UTC · 8d agoVulnerabilityCVE-2026-747611

18

Rogue ScreenConnect Installations Across Unrelated Hosts Suggest Worm-Like Activity

Huntress observed rogue ScreenConnect deployments with worm-like VBScript propagation across unrelated organizations, prompting a ConnectWise advisory on file transfer behavior.

Huntress identified multiple incidents in late August 2026 where social engineering led to rogue ScreenConnect remote access clients deployed on victim machines, which then spawned wscript.exe to run four VBScript payloads (1.vbs through 4.vbs) for profiling, telemetry collection, and persistence via a WindowsServiceHost Run key. Modified ScreenConnect clients propagated the VBScript chain to connected endpoints, creating worm-like spread. ConnectWise published an advisory on September 3, 2026, confirming an issue affecting file transfer behavior in both cloud and on-premises ScreenConnect deployments, with a CVE and fix expected within the week; partners were advised to review and disable TransferFiles permissions in the interim.

Huntress·Sep 3, 08:50 UTC · 13d agoExploit / PoC in the wild1

78

CVE-2026-82431: Apache Storm Client: Authorization Bypass When nimbus.groups Is Configured Without nimbus.users

Apache Storm Client 3.0.0 ACL bypass lets every authenticated principal bypass restrictions when nimbus.groups is set without nimbus.users.

CVE-2026-82431 affects Apache Storm Client (org.apache.storm:storm-client) versions 3.0.0 before 3.1.0. SimpleACLAuthorizer returned early when nimbus.users was empty, before evaluating nimbus.groups. Operators restricting cluster access by group alone received no restriction, so any authenticated principal could execute user-level commands. Fixed in version 3.1.0.

oss-security·Sep 13, 14:28 UTC · 3d agoVulnerabilityCVE-2026-82431

30

PEEP: A Browser RAT Posing as a Chrome Extension

SOCRadar's STRU analyzed PEEP, an emerging Chromium-based RAT disguised as a Chrome extension enabling post-exploitation control of browsers.

SOCRadar's Threat Research Unit (STRU) identified and analyzed PEEP, a Chromium-based post-exploitation toolkit distributed as a browser extension. PEEP provides RAT-style capabilities while posing as a legitimate Chrome extension. It is assessed as an emerging threat worth monitoring by defenders.

SOCRadar·Sep 4, 09:50 UTC · 12d agoMalware

45

What Is a Website Attack Surface? A Beginner’s Guide to Reducing Risk

Sucuri's beginner guide explains how logins, plugins, APIs, and forgotten backups expand a website's attack surface and how to reduce that risk.

Sucuri published educational guidance explaining that login pages, contact forms, plugins, APIs, staging sites, and forgotten backups each add exposed components that constitute a website's attack surface. The article frames continuous attack surface reduction as a risk management practice for website owners. It is evergreen educational content rather than breaking incident news.

Sucuri Blog·Aug 19, 20:06 UTC · 27d agoIndustry

15

Siemens Teamcenter

Reflected XSS in Siemens Teamcenter /auth/ redirect flow lets unauthenticated attackers inject JavaScript into authenticated sessions (CVE-2026-58113).

CISA republished Siemens advisory SSA-157465 for CVE-2026-58113, a reflected cross-site scripting flaw (CVSS 6.1) in the /auth/ authentication redirect flow of Siemens Teamcenter V2412, V2506, V2512, and V2606. An unauthenticated attacker can craft a URL that injects arbitrary JavaScript into an authenticated user's browser, enabling data theft or actions within the victim's Teamcenter session. Fixed versions are available for all affected releases; Enzo Alvarez of Bishop Fox reported the vulnerability.

CISA Advisories·Sep 15, 12:00 UTC · 1d agoAdvisoryCVE-2026-58113

20

CVE-2026-77883: Apache Syncope: Information disclosure via one-hop JEXL navigation past the JexlContextBuilder name denylist

Apache Syncope's JEXL template engine permits one-hop navigation past the JexlContextBuilder name denylist, enabling administrator-driven information disclosure.

CVE-2026-77883 is a moderate-severity exposure of sensitive information through data queries in Apache Syncope's syncope-core-provisioning-api module. An administrator can bypass the JexlContextBuilder name denylist using one-hop JEXL navigation to reach sensitive data. Affected versions are 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.7, and 4.1.0-M0 through 4.1.2.

oss-security·Sep 14, 15:47 UTC · 2d agoVulnerabilityCVE-2026-778831

18

Webinar: What happens in the first hours of a Google Workspace breach

BleepingComputer and Material Security will host a September 23 webinar analyzing first-hours response decisions in real Google Workspace breaches.

The September 23, 2026 webinar 'Breach autopsy' features Material Security VP of Security Rajan Kapoor and Fireside Consulting president Rick Fitzgerald examining publicly documented Google Workspace breaches. Two analyzed attacks combined social engineering with malicious OAuth applications to gain access. Sessions will cover scoping exposed users and data, confirming whether attacker access persists, and which early containment decisions limited or worsened impact for lean security teams.

BleepingComputer·12:11 UTC · 5h agoIndustry

10