CVE-2026-54420 PUBLISHED

Assigner: mitre
Reserved: 14.06.2026 Published: 14.06.2026 Updated: 14.06.2026

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 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS Score: 8.5

Attack Vector	Network	Scope	Changed
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	LiteSpeed Technologies
Product	cPanel Plugin
Versions	Default: unaffected affected from 2.3 to 2.4.8 (excl.)

Workarounds

Disable the cPanel PlugIn for LiteSpeed

Solutions

Upgrade to the LiteSpeed WHM PlugIn v5.3.2.0 or higher (which includes the cPanel PlugIn v2.4.8).

References

https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel
https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/

Problem Types

CWE-61 UNIX Symbolic Link (Symlink) Following CWE