CVE-2026-54420
8.5 · HIGH Actively ExploitedOverview
CVE-2026-54420 is a high-severity vulnerability affecting litespeedtech litespeed_cpanel_plugin. It was published on June 14, 2026 and has a CVSS 3.1 base score of 8.5 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
This vulnerability has a CVSS 3.1 base score of 8.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from litespeedtech. Update litespeed_cpanel_plugin to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| litespeedtech | litespeed_cpanel_plugin | >= 0, < 2.4.8 | Affected |
| litespeedtech | litespeed_whm_plugin | >= 0, < 5.3.2.0 | Affected |
Frequently Asked Questions
What is CVE-2026-54420?
CVE-2026-54420 is a high-severity vulnerability affecting litespeedtech litespeed_cpanel_plugin. It was published on June 14, 2026 and has a CVSS 3.1 base score of 8.5 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
How severe is CVE-2026-54420?
This vulnerability has a CVSS 3.1 base score of 8.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-54420?
Check the references section for vendor advisories and patches from litespeedtech. Update litespeed_cpanel_plugin to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-54420?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-54420 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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