CVE-2026-54420
LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability
LiteSpeed cPanel PluginApplications & CMS
CVSS
8.5HighExploit odds (EPSS)0.81%Chance of exploitation activity in the next 30 days, higher than 56% of CVEs. Scored 23 Oct 2026FIRST EPSS
CISA required actionApply 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. CISA KEV
What fixes it
- 2.4.8cPanel PluginCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Timeline
Description
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.
Text from CVE List
Affected versions 1
- cPanel Pluginaffected: 2.3 before 2.4.8CVE List
References 4
- blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/Advisoryvia CVE List
- nvd.nist.gov/vuln/detail/CVE-2026-54420Referencevia CISA KEV
- litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanelReferencevia CVE List
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420Referencevia CVE List