Symlink handling vulnerability in LiteSpeed cPanel plugin on CloudLinux/CageFS shared hosting
CVE-2026-54420 affects the LiteSpeed cPanel plugin before 2.4.8, including LiteSpeed WHM PlugIn before 5.3.2.0 as distributed with the vulnerable plugin. The issue is described as improper handling of symlinks supplied by a user who already has FTP access or web shell access on a shared hosting server running CloudLinux/CageFS. Based on the provided classification as CWE-61, the flaw involves incorrect restriction or resolution of symbolic links in a shared-hosting context, creating a path by which a low-privileged tenant can abuse symlink behavior across isolation boundaries. The vulnerability was reported as exploited in the wild in May 2026.
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Recent activity
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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