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CVE-2026-54420

LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability

LiteSpeed cPanel Plugin CWE-61

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.

CVSS Score
8.5
High
EPSS — Exploit Probability
1.4%
Riskier than 72% of all CVEs · checked 2026-09-14
Exploitation
Confirmed in the wild
KEV since 2026-06-15
Remediation
Patch available
Federal deadline 2026-06-18
CISA required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. Deadline for federal agencies: 2026-06-18.

NVD entry Vendor patch PoC / advisory CISA KEV

7 articles across 5 outlets · first covered Jun 15, 2026 · latest Jun 17, 2026

Coverage timeline

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