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Privilege Escalation Vulnerability in LiteSpeed cPanel Plugin

Indian – Computer Emergency Response Team (https://www.cert-in.org.in)

Severity Rating: CRITICAL

Software Affected

LiteSpeed cPanel Plugin versions prior to 2.4.8.

Overview

A vulnerability has been reported in LiteSpeed cPanel Plugin which could allow an attacker to gain elevated privileges on the targeted system.

Target Audience:

Web hosting providers, server administrators, and cPanel users managing LiteSpeed-powered shared hosting environments.

Risk Assessment:

High risk of privilege escalation, full server compromise.

Impact Assessment:

Potential for root-level access, server compromise, disruption of hosted services.

Description

LiteSpeed User-End cPanel Plugin is a management plugin that allows users to manage LiteSpeed Web Server features directly through the cPanel interface.

A vulnerability exists in the LiteSpeed cPanel Plugin due to improper handling of user-supplied symlinks links. An attacker with FTP access or web shell access on a shared hosting server running CloudLinux/CageFS could exploit this vulnerability to bypass intended security restrictions.

Successful exploitation of this vulnerability could allow an attacker to gain elevated privileges on the targeted system.

Solution

Apply appropriate updates as mentioned by the vendor:

https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/

Vendor Information

LiteSpeed

https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/

References

BleepingComputer

https://www.bleepingcomputer.com/news/security/cisa-warns-of-another-actively-exploited-cpanel-plugin-flaw/

CVE Name

CVE-2026-54420

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Thanks and Regards,

CERT-In

Incident Response Help Desk

e-mail: incident@cert-in.org.in

Phone: +91-11-22902657

Toll Free Number: 1800-11-4949

Toll Free Fax : 1800-11-6969

Web: http://www.cert-in.org.in

PGP Fingerprint: A768 083E 4475 5725 B81A A379 2156 C0C0 B620 D0B4

PGP Key information:

https://www.cert-in.org.in/s2cMainServlet?pageid=CONTACTUS

Postal address:

Indian Computer Emergency Response Team (CERT-In)

Ministry of Electronics and Information Technology

Government of India

Electronics Niketan

6, C.G.O. Complex

New Delhi-110 003

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