Critical cPanel LiteSpeed Vulnerability Exposes Servers to Root-Level Exploits, Urgent Update Required

May 23, 2026
Critical cPanel LiteSpeed Vulnerability Exposes Servers to Root-Level Exploits, Urgent Update Required
  • A critical vulnerability in the cPanel LiteSpeed plugin allows any cPanel user, including a compromised account, to execute scripts as root via the lsws.redisAble function, with versions 2.3 through 2.4.4 affected and active exploitation observed in the wild.

  • The issue is being exploited in real-world attacks, highlighting an active exploitation trend.

  • An indicator of compromise is available for detection, suggesting the need to search for suspicious patterns using grep -rE.

  • The vulnerable parameter is cpnl_jsonapi_func=redisAble, which triggers the exploit path.

  • LiteSpeed has publicly disclosed this as a maximum-severity vulnerability, CVE-2026-48172, due to incorrect privilege assignment that permits arbitrary script execution with elevated privileges.

  • LiteSpeed’s WHM plugin is not affected; the vulnerability has been patched in cPanel plugin version 2.4.5, following discovery by security researcher David Strydom.

Summary based on 1 source


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