CVE Watch23 jul 2026

CVE-2026-54420

LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability

CVSS

8.5

Alto

EPSS

0.8%

p56

KEV

SÍ

15 jun 2026

Exploit Today

0-100

Publicado: 14 jun 2026 · Última mod.: 23 jul 2026 · CWE-61

EPSS · 30d

0.8%EPSS · 30 días1.4%

2026-09-182026-10-15

Ficha del catálogo KEV

Producto

LiteSpeed / cPanel Plugin

Vulnerabilidad

LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability

Añadido a KEV

15 jun 2026

Remediar antes de

18 jun 2026

Uso conocido en ransomware

Descripción resumida

LiteSpeed cPanel plugin contains a UNIX symbolic link (Symlink) following vulnerability that could allow a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS.

Acción requerida

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Notas

https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-54420

Descripción técnica

LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0) mishandles symlinks provided by a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS, as exploited in the wild in May 2026.

Referencias oficiales

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