---
id: "CVE-2026-54420"
kind: "vulnerability"
aliases: ["CVE-2026-54420"]
title: "LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0) mishandles symlinks\u2026"
severity: "high"
cvss: 8.5
epss: null
exploited: true
status: "open"
category: "vendor"
products: [{"name": "LiteSpeed cPanel Plugin", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "litespeedtech litespeed cpanel plugin", "fixed": ["2.4.8"], "affected": "< 2.4.8", "ecosystem": "vendor"}, {"name": "litespeedtech litespeed whm plugin", "fixed": ["5.3.2.0"], "affected": "< 5.3.2.0", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["cagefs", "cloudlinux", "cpanel", "exploited", "litespeed", "shared-hosting", "vendor"]
not_affected_if: ["managed-hosting", "no-litespeed-cpanel-plugin"]
published_at: "2026-06-14T04:16:28+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-23T23:44:51+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2026-54420", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54420", "first_seen_at": "2026-10-23T23:44:51+00:00"}]
---

# LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0) mishandles symlinks…

The LiteSpeed cPanel plugin follows UNIX symbolic links in a way that lets a user with FTP or web shell access reach files outside their allowed area on a shared hosting server running CloudLinux/CageFS. CISA lists it as actively exploited, so an attacker with a hosting account can read or change files they should not reach.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:LiteSpeed cPanel Plugin affected ? fixed ?
- vendor:litespeedtech litespeed cpanel plugin affected < 2.4.8 fixed 2.4.8
- vendor:litespeedtech litespeed whm plugin affected < 5.3.2.0 fixed 5.3.2.0

## How to check

Check the installed LiteSpeed cPanel plugin version against the vendor advisory: unknown
CISA KEV entry lists the affected product; confirm the plugin is installed on your cPanel hosts

## Fix

Apply the vendor mitigation or update named in the vendor advisory; unknown in the sources
If no mitigation is available, discontinue use of the plugin per CISA BOD 26-04 guidance

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2026-54420
- 2026-10-23T23:44:51+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-54420

## From the sources

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.

CISA 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.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_