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CVE-2026-54420: LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability

LiteSpeed cPanel Plugin · in CISA KEV since 2026-06-15

2026-06-15added to KEV

2026-06-18federal remediation due date

1.44%EPSS exploit probability (30 days) 72.0th percentile

8.5 HIGHCVSS 3.1

Unknownknown ransomware use

1days from NVD publication to KEV

What it is

LiteSpeed cPanel plugin contains a UNIX symbolic link (Symlink) following vulnerability that could allow a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS.

Required action (CISA)

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.

CWE	CWE-61
CVSS vector	`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H`
NVD published	2026-06-14 (Analyzed)

Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2026-54420.json · all KEV CVEs

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