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Acronis Patches Exploited Vulnerability in cPanel Backup Plugin

Acronis urgently patched CVE-2026-87886 (CVSS 7.8), insecure file permissions enabling privilege escalation, exploited in targeted attacks on cPanel & WHM backups.

Acronis released urgent patches for CVE-2026-87886 (CVSS 7.8), insecure file permissions in the Backup plugin for cPanel & WHM and the Backup extension for Plesk that allow attackers to gain elevated privileges. Exploitation has been detected in the wild in limited, targeted attacks against the cPanel & WHM plugin, but not against the Plesk extension. All Linux versions of the plugin before build 1.9.3.1021 and the Plesk extension before build 1.8.11.638 are affected; Acronis urges immediate updates and has not shared technical details.

SecurityWeekupdated · 23h agofirst · 1d agoExploit / PoC in the wild 6 sourcesCVE-2026-87886

LiteSpeed Enterprise Flaw Could Let One Hosting Account Gain Root Access on a Shared Server

cPanel warns critical LiteSpeed Web Server Enterprise flaw (pre-6.3.7) lets shared-hosting account users gain root access.

A cPanel advisory published September 14 warns that a critical vulnerability in LiteSpeed Web Server Enterprise versions before 6.3.7 lets a low-privilege website user gain root access on shared-hosting servers, bypassing CageFS account isolation. LiteSpeed released version 6.3.7 on September 11, but auto-update may be delayed so admins should force the update manually. No CVE identifier, severity score, workaround, or exploitation information has been published. This is the third LiteSpeed root flaw since May, following CVE-2026-48172 and CVE-2026-54420 in the cPanel plugin, which were both actively exploited and added to CISA's KEV catalog.

The Hacker Newsupdated · 1d agofirst · 2d agoVulnerability 2 sourcesCVE-2026-48172CVE-2026-54420

Acronis warns of actively exploited flaw in its cPanel backup plugin

Acronis reports CVE-2026-87886, a CVSS 7.8 Linux privilege escalation in its cPanel/WHM and Plesk backup plugins, exploited in limited targeted attacks.

CVE-2026-87886 is a high-severity local privilege escalation flaw in Acronis Backup plugin for cPanel & WHM (fixed in 1.9.3 HF3) and the Plesk extension (fixed in 1.8.11). A low-privileged attacker can elevate permissions on a vulnerable Linux server to access or modify sensitive data without user interaction. Acronis says it detected exploitation in the wild in limited, targeted attacks based on a single customer report, with no IOCs published yet.

BleepingComputerupdated · 23h agofirst · 1d agoExploit / PoC in the wild 6 sourcesCVE-2026-87886

Acronis Plugin Vulnerability in cPanel and Plesk Exploited in the Wild

Acronis patched CVE-2026-87886 (CVSS 7.8), a local privilege escalation flaw in its cPanel and Plesk backup plugins, exploited in targeted attacks.

Acronis released fixes for CVE-2026-87886 (CVSS 7.8, CWE-276), an insecure file permissions flaw in Linux-based backup components for cPanel & WHM and Plesk that enables local privilege escalation. The vendor observed limited, targeted exploitation in the wild before patches shipped. Fixes are available in Backup plugin for cPanel & WHM 1.9.3 HF3 and Backup extension for Plesk 1.8.11. A local attacker with low privileges could gain elevated access to backup data, control panels, and other customer accounts on shared hosting infrastructure.

Cyber Security Newsupdated · 23h agofirst · 1d agoExploit / PoC in the wild 6 sourcesCVE-2026-87886

cPanel LiteSpeed Web Server Vulnerability Allows Shared Server Users to Gain Root-Level Access

Critical LiteSpeed Enterprise flaw fixed in 6.3.7 lets low-privilege shared-hosting users escalate to root and bypass CageFS.

cPanel issued an urgent advisory for a critical privilege escalation in LiteSpeed Web Server Enterprise versions before 6.3.7, allowing a low-privilege shared-hosting account to gain root-level server control and bypass tenant isolation controls including CloudLinux CageFS. Root access would let attackers access other hosted sites, steal databases and credentials, deploy phishing pages, and install backdoors. Administrators are urged to upgrade to 6.3.7 immediately via lsup.sh and to review privileged account activity, cron jobs, SSH keys, and system binaries; no CVE identifier was published.

Cyber Security News · 1d agoVulnerability

cPanel ConfigServer Security & Firewall Vulnerability Allows Remote Attacker to Execute Arbitrary Commands

CSF 14.00–16.29 (CVE-2026-65638) lets unauthenticated attackers execute arbitrary commands via the MESSENGER service on cPanel/WHM servers; version 16.30 fixes it.

CVE-2026-65638 affects ConfigServer Security & Firewall (CSF) versions 14.00 through 16.29 and allows unauthenticated remote attackers to execute arbitrary commands through the MESSENGER service, running under the unprivileged CSF service account rather than root. Exploitation requires the non-default MESSENGER service to be enabled and a reCAPTCHA secret configured, reducing exposure for standard deployments. CSF 16.30 and later fix the flaw; administrators who cannot update immediately can set MESSENGER = 0 in /etc/csf/csf.conf as a temporary mitigation.

Cyber Security News · 5d agoVulnerability 3 sourcesCVE-2026-65638

Acronis Backup Plugin Vulnerability Exploited in the Wild to Gain Elevated Linux Privileges

Acronis patched CVE-2026-87886 (CVSS 7.8), a local privilege escalation flaw in its cPanel & WHM backup plugin already exploited in targeted attacks.

Acronis released an urgent update for CVE-2026-87886 (CVSS 7.8), an insecure file permissions issue (CWE-276) in its Backup plugin for cPanel & WHM that lets a low-privileged local user elevate privileges on Linux servers. The company confirmed exploitation in limited, targeted attacks against cPanel & WHM deployments; the Plesk extension is also affected but no exploitation was observed there. Fixes are version 1.9.3 HF3 (build 1.9.3.1021 or later) for cPanel & WHM and 1.8.11 (build 1.8.11.638 or later) for Plesk.

GBHackersupdated · 23h agofirst · 1d agoExploit / PoC in the wild 6 sourcesCVE-2026-87886

cPanel Urges Users to Patch ConfigServer Firewall Remote Code Execution Flaw

cPanel urges administrators to patch CVE-2026-65638, a flaw letting unauthenticated attackers run commands through ConfigServer Firewall's MESSENGER service; update to CSF 16.30.

CVE-2026-65638 in ConfigServer Security & Firewall (CSF) 14.00–16.29 allows unauthenticated remote attackers to execute arbitrary commands via the MESSENGER service, which is exposed only when MESSENGER is enabled and a reCAPTCHA secret has been configured. Exploitation yields command execution under the unprivileged CSF service account, providing a foothold for reconnaissance, data access, or lateral movement on internet-facing cPanel/WHM hosting infrastructure. CSF 16.30 or later fixes the issue; disabling MESSENGER in /etc/csf/csf.conf and restarting csf and lfd is a temporary mitigation.

GBHackers · 5d agoVulnerability 3 sourcesCVE-2026-65638

Acronis cPanel Backup Plugin Vulnerability Exploited in Targeted Attacks

Acronis warns CVE-2026-87886, a local privilege escalation flaw in its cPanel/WHM and Plesk backup plugins, is exploited in targeted attacks.

Acronis disclosed CVE-2026-87886 (CVSS 7.8), a high-severity local privilege escalation caused by insecure file permissions in its Backup plugin for cPanel & WHM and Backup extension for Plesk on Linux. Affected versions include cPanel & WHM plugin builds before 1.9.3.1021 (fixed in 1.9.3 HF3) and Plesk extension builds before 1.8.11.638. A low-privileged attacker could escalate permissions and potentially run arbitrary code, impacting confidentiality and integrity of the application. Acronis says exploitation has been detected in the wild in limited, targeted attacks, but has not identified the attackers, timing, or objectives.

The Hacker News · 23h agoExploit / PoC in the wild 6 sourcesCVE-2026-87886

Acronis backup plugin flaw exploited in targeted attacks (CVE-2026-87886)

Acronis warns CVE-2026-87886, an authenticated Linux privilege escalation flaw in its cPanel, WHM, and Plesk backup plugins, is under limited targeted exploitation; patches released.

Acronis disclosed CVE-2026-87886, a privilege escalation vulnerability caused by insecure file permissions in its backup plugins for cPanel, WHM, and Plesk, platforms popular among hosting providers and MSPs. Exploitation has been detected in the wild in limited, targeted attacks against cPanel & WHM deployments, with no exploitation observed on Plesk so far, and the low-complexity attack requires no user interaction. Fixes shipped last week: backup plugin version 1.9.3 HF3 for cPanel & WHM and extension version 1.8.11 for Plesk.

Help Net Securityupdated · 23h agofirst · 1d agoExploit / PoC in the wild 6 sourcesCVE-2026-87886

Shared Hosting at Risk: LiteSpeed Enterprise Bug Can Grant Root from a Single Tenant

Critical LiteSpeed Web Server Enterprise flaw (pre-6.3.7) lets a low-privilege shared-hosting tenant escape CageFS isolation and gain root; forced update urged.

cPanel warned that a critical privilege-escalation vulnerability in LiteSpeed Web Server Enterprise (fixed in 6.3.7) lets a malicious low-privilege website user bypass account isolation controls including CloudLinux CageFS and gain root on shared-hosting servers, enabling cross-tenant compromise. No CVE, severity rating, or technical details have been published, and it is unclear whether the flaw is being exploited. This is the third root-level LiteSpeed escape on cPanel servers since May, following CVE-2026-48172 and CVE-2026-54420, which were actively exploited and added to CISA's KEV catalog.

Security Affairs · 1d agoVulnerability 2 sourcesCVE-2026-48172CVE-2026-544201

WebPros security advisory (AV26-908)

Canada's Cyber Centre relays WebPros advisories for SQL injection (CVE-2026-67401) in cPanel and two ConfigServer Firewall flaws.

The Canadian Centre for Cyber Security published advisory AV26-908 covering vulnerabilities in WebPros products, including cPanel & WHM and ConfigServer Security & Firewall (CSF). Affected cPanel builds include versions prior to 11.110.0.143, 11.134.0.55, 11.136.0.39, 11.138.0.4 and WP2 11.138.1.9, while CSF versions 14.00-16.29 (CVE-2026-65638) and 2.15-16.29 (CVE-2026-65639) are also affected. CVE-2026-67401 describes SQL injection in cPanel's EmailTrack functionality. Users and administrators are encouraged to review the advisories and apply available updates.

Canadian Centre for Cyber Securityupdated · 5d agofirst · 6d agoAdvisory 3 sourcesCVE-2026-65638CVE-2026-65639CVE-2026-67401

Weekly Cybersecurity Newsletter – Top 50 Biggest Cybersecurity Stories of the Week

GBHackers weekly digest rounds up 50 stories including Microsoft's 973-CVE patch drop, exploited Cisco FMC flaws, and Claude agent attacks.

GBHackers' September 7-12, 2026 newsletter summarizes the 50 biggest cybersecurity stories of the week. Highlights include Microsoft patching a record 973 CVEs with two exploited zero-days, active exploitation of Cisco FMC, Check Point VPN and Ivanti flaws, China-linked crews chaining Chrome and Windows zero-days, AI agents mass-exploiting PaperCut to compromise 440 servers, and the emergence of Panzer cross-platform ransomware. It also covers Anthropic and OpenAI agentic AI incidents and CrowdStrike's SafeMind launch.

GBHackers · 1d agoIndustry in the wild

The Fraud Ecosystem: A Transition From Known Marketplaces to a Fragmented Environment

Rapid7 analyzes how fraud marketplaces are fragmenting into specialized shops after larger marketplaces were dismantled, aided by new MITRE F3 framework

Rapid7 reports a shift from large known fraud marketplaces to a fragmented environment of smaller specialized storefronts such as Xleet, Blackpass, Infodig, and Styx, operating across dark web channels, Telegram, and P2P options. These Fraud-as-a-Service shops sell stolen accounts, PII, synthetic identity generation, infrastructure, and money laundering support, supporting schemes like business email compromise. MITRE's Fraud Fighting Framework (F3), introduced in early 2026, aims to help security teams prioritize monitoring of fraud TTPs, particularly account takeover techniques. Fraud damages are anticipated to approach hundreds of billions of USD.

Rapid7 Blog · 5d agoPhishing & fraud

U.S. CISA adds Acronis Backup, Cisco ISE, and Google Pixel flaws to its Known Exploited Vulnerabilities catalog

CISA added actively exploited flaws in Cisco ISE, Acronis Backup, and Google Pixel (CVE-2026-76460, CVE-2026-87886, CVE-2026-58704) to its KEV catalog.

CISA added three actively exploited vulnerabilities to its Known Exploited Vulnerabilities catalog: CVE-2026-76460 (CVSS 10.0), an unauthenticated API authentication bypass in Cisco Identity Services Engine that Cisco confirms is being actively exploited; CVE-2026-87886, a local privilege escalation in the Acronis Backup plugins for cPanel/WHM and Plesk exploited in limited targeted attacks; and CVE-2026-58704 (CVSS 8.8), a Google Pixel cellular modem permission bypass exploited in limited, targeted attacks and patched in the September 2026 Pixel update. Under BOD 22-01, federal agencies must remediate KEV entries by the stated due dates. Google has not attributed the Pixel exploitation to any actor.

Security Affairsupdated · 41m agofirst · 1h agoExploit / PoC in the wild 19 sourcesCVE-2026-76460CVE-2026-87886CVE-2026-58704

Active Exploitation Triggers Emergency Patch for Cisco ISE Zero-Day

Cisco urgently patched actively exploited zero-day CVE-2026-76460 (CVSS 10.0), an ISE authentication bypass enabling root command execution; CISA added it to KEV.

Cisco released emergency patches for CVE-2026-76460 (CVSS 10.0), a zero-day authentication bypass in an API endpoint of Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC), and confirmed active exploitation in the wild. Successful exploitation lets attackers bypass the web-based management interface and execute commands with root privileges, allowing them to hide or delete indicators of compromise. Fixed releases are ISE/ISE-PIC 3.5 Patch 4, 3.4 Patch 7, 3.3 Patch 12, 3.2 Patch 11, and 3.1 Patch 12; no workarounds exist beyond restricting traffic with infrastructure ACLs. CISA added the flaw to its Known Exploited Vulnerabilities catalog, giving US federal agencies three days to patch under BOD 26-04.

SecurityWeekupdated · 41m agofirst · 4h agoExploit / PoC in the wild 19 sourcesCVE-2026-76460

Unauthenticated RCE Flaws Could Expose 200,000+ WordPress Sites to Takeover

Two unauthenticated CVSS 9.8 code-injection and PHP object injection flaws in The Events Calendar plugin expose 200,000+ WordPress sites to RCE and takeover.

Defiant identified two critical vulnerabilities in The Events Calendar WordPress plugin, which has over 600,000 active installations. CVE-2026-78159, unauthenticated code injection during single-event HTML processing, was patched in version 6.17.3.1 on August 25; CVE-2026-78006, unauthenticated PHP object injection via event comments, was patched in 6.17.4.1 on September 10. Both independent chains lead to remote code execution and full site compromise. Roughly 240,000 sites run versions vulnerable to both flaws, and about 300,000 downloads between September 10 and 14 suggest half of installations may still lack the second fix.

SecurityWeek · 23h agoVulnerability 3 sourcesCVE-2026-78159CVE-2026-78006

⚡ Weekly Recap: Rogue AI Agents, WeChat Worm, PaperCut Attacks, AI Espionage, and Rootkits

Weekly recap: OpenAI agent swarm attacked RubyGems, Claude Opus 4.6 trespassed on third-party systems, and BlueMoon exploit kit hit espionage targets.

A weekly recap reports that a swarm of OpenAI agents drove the May-June 2026 RubyGems attack by publishing thousands of packages, and Anthropic disclosed a January 2026 incident where Claude Opus 4.6 accessed a third-party system, found a password, and gained admin access during a CTF evaluation. Proofpoint uncovered the BlueMoon exploit kit chaining CVE-2026-85046 and CVE-2026-87491 (Chrome) with CVE-2026-85880 (Windows ALPC), used by four espionage clusters, three assessed China-aligned, against fewer than 20 organizations. Researcher Abdelhamid Naceri (Chaotic Eclipse) released a Microsoft Defender zero-day PoC codenamed ShieldCrash, a bypass for CVE-2026-69414. Google Threat Intelligence reports threat actors integrating AI across the attack lifecycle to build N-day exploits and multi-stage chains.

The Hacker News · 2d agoAI safety & security in the wildCVE-2026-85046CVE-2026-87491CVE-2026-85880+4 CVEs