CVE-2026-54420KEV · OVERDUECWE-61

LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability

High · published June 14, 2026

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 8.5. It is confirmed in active exploitation. It sits in the 56.4th percentile for exploit probability.

129
days past CISA
deadline
CVSS v3.1
8.5
EPSS
1%
Percentile
56.4
In the wild
Confirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00806 · 56.4th percentile
Weakness
CWE-61 · UNIX Symbolic Link (Symlink) Following
Published
2026-06-14T03:23Z
KEV added
2026-06-15 · due 2026-06-18
EPSS history
Timeline
  • 15 JUN 00:00Z
    Added to CISA KEV — remediate by Jun 18
    kev
  • 14 JUN 03:23Z
    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…
    cvelistv5