CVE-2026-54420

criticalknown exploitedpublic exploitcovered by 1 sourcefirst seen 2026-06-15

Actively exploited. CVE-2026-54420 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-06-15) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.

Public exploit code is available. Proof-of-concept or working exploit code for CVE-2026-54420 is indexed in GitHub PoC. Expect opportunistic scanning and exploitation attempts — prioritize remediation.

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.

CSIRTS triage

What: The vulnerability allows a user with FTP or web shell access to exploit the symlink following issue.
Who is affected: Users with FTP or web shell access on shared hosting servers running CloudLinux/CageFS.
Urgency: Remediation is urgent as the vulnerability is critical and actively exploited.
Action: Update the LiteSpeed cPanel plugin to the latest version.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 66% of all EPSS-scored CVEs.

Exploit availability

Public exploit or proof-of-concept code for CVE-2026-54420 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.

GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗

Advisory coverage (1)

criticalexploitedCVE-2026-54420: LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerabilitycisa-kev · 2026-06-15

External references

NVD record for CVE-2026-54420

CVE.org record

CISA KEV catalog

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