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VULNERABILITIES

CVE-2026-54420 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.5 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420 CISA-ADPUS Government Resource
https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/ [email protected]Vendor Advisory
https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel [email protected]Product

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability NameDate AddedDue DateRequired Action
LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following VulnerabilityJun 15, 2026Jun 18, 2026Apply 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.

Weakness Enumeration

CWE-IDCWE NameSource
CWE-61UNIX Symbolic Link (Symlink) Following[email protected]

Affected Products

ProductVersions
litespeedtech litespeed cpanel plugin
< 2.4.8

CPE

  • cpe:2.3:a:litespeedtech:litespeed_cpanel_plugin:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
litespeedtech litespeed whm plugin
< 5.3.2.0

CPE

  • cpe:2.3:a:litespeedtech:litespeed_whm_plugin:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

7 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-54420
NVD Published Date:
Jun 14, 2026
NVD Last Modified:
Jul 23, 2026
Source:
[email protected]
CVE-2026-54420 Details - Not Deferred