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2026-06-14
LiteSpeed cPanel Plugin Symlink Handling Vulnerability (CVE-2026-54420) Analysis and Mitigation Guide
[Affected Scope] LiteSpeed cPanel plugin versions prior to 2.4.8 (distributed in LiteSpeed WHM PlugIn prior to 5.3.2.0)
[Impact] An attacker with FTP or web shell access on a shared hosting server running CloudLinux/CageFS can exploit symlinks to bypass isolation, escalate privileges, and compromise the server
[Mitigation] Immediately upgrade the LiteSpeed WHM plugin to version 5.3.2.0 or higher to apply the patched cPanel plugin (v2.4.8+)