What is CVE-2026-54420?

CVE-2026-54420 is a high-severity vulnerability, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 8.5/10. Published 2026-06-14.

How severe is CVE-2026-54420?

High severity. CVSS v3 base score is 8.5 out of 10.

CVE-2026-54420

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…

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

Weakness classification (CWE)

CWE-61 — UNIX Symbolic Link (Symlink) Following

References

cve@mitre.org
cve@mitre.org

Frequently asked questions

What is CVE-2026-54420?: CVE-2026-54420 is a high-severity vulnerability, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 8.5/10. Published 2026-06-14.
How severe is CVE-2026-54420?: High severity. CVSS v3 base score is 8.5 out of 10.