CVE-2026-54420

UNIX Symbolic Link (Symlink) Following in LiteSpeed cPanel Plugin. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 15 June 2026.

Product
LiteSpeed cPanel Plugin
Added to CISA's catalog
Federal fix-by date
Ransomware
No known use in ransomware campaigns

CISA’s 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.

Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 4 November 2026.