CVE WatchJul 23, 2026

CVE-2026-54420

LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability

CVSS

8.5

High

EPSS

0.8%

p56

KEV

YES

Jun 15, 2026

Exploit Today

0-100

Published: Jun 14, 2026 · Last modified: Jul 23, 2026 · CWE-61

EPSS · 30d

0.8%EPSS · 30 days1.4%

2026-09-162026-10-14

KEV catalog record

Product

LiteSpeed / cPanel Plugin

Vulnerability

LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability

Added to KEV

Jun 15, 2026

Remediate by

Jun 18, 2026

Known ransomware use

Summary description

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.

Required action

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.

Notes

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

Technical description

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.

Official references

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CVE-2026-1027405.8 MED

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—

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