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CVE-2026-54420

LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0) mishandles symlinks provided by a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS, as exploited in the wild in May 2026.

Scores

8.5
CVSS 8.5 out of 10, high severity.
0.8%
EPSS 0.8% chance of exploitation in the next 30 days.

The facts

Published
14 June 2026
Last changed
23 July 2026
NVD status
Analyzed
Severity
High, CVSS 8.5 out of 10 (version 3.1)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness
Affects
  • litespeedtech litespeed cpanel plugin
  • litespeedtech litespeed whm plugin
Known exploited
Yes. CISA added it to the Known Exploited Vulnerabilities catalogue on 15 June 2026.
EPSS
0.8% chance of exploitation activity in the next 30 days (percentile 56).

Is there a Securelyn advisory?

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References