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CVE-2026-54420

HighPublished

LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability

Published: Jun 14, 2026
Updated: Jun 16, 2026
Assigning CNA: mitre
Evidence observed: Jun 15, 2026

Primary CVSS

8.5/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS probability estimate

1.4%

Low · next 30 days

Percentile: 71.6%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

CISA Known Exploited

This CVE appears in the CISA Known Exploited Vulnerabilities catalog.

Summary

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.

Sources

CVE-2026-54420-LiteSpeed-Symlink-ExploitPoC
PoC de CVE-2026-54420: explotacion via symlink en el plugin LiteSpeed de cPanel/WHM.
CVE-2026-54420Exploit
CVE-2026-54420

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