Vulnerability Report

CVE-2026-54420

CISA KEV Active

Title: Symlink Race in LiteSpeed cPanel Plugin

Other

Proof Of Concept

PoC Available for CVE-2026-54420

CWE Category CWE-61
Published Date Jun 14, 2026
Modified Date Jun 16, 2026
Exploit Status Available
Score 8.5 CVSS v3.1
Exploit Probability (EPSS)
0.65%

Vulnerability Summary

CVE-2026-54420: 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.

Impacted Vendors

L
litespeedtech 2

Reference Links

https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/ https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel
CVSS v3.1
Source Entity [email protected]
Severity HIGH
8.5
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-54420 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/HORKimhab/CVE-2026-54420
View Code
GitHub https://github.com/Resellnom/litespeed-cpanel-cve-2026-54420-fix
View Code
GitHub https://github.com/mahfuzreham/litespeed-cpanel-cve-2026-54420-fix
View Code
MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected Stack

No specific products linked.