ACTIVELY EXPLOITED
CVE-2026-54420: LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability
| Vendor | LiteSpeed |
|---|---|
| Product | cPanel Plugin |
| Actively exploited | Yes |
| Added to CISA KEV | 15 Jun 2026 |
| CISA federal deadline | 18 Jun 2026 |
| Weakness (CWE) | CWE-61 |
Required action (CISA's text)
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.
Description (NVD)
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.
SOURCES
Other LiteSpeed flaws
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.