CVE-2026-67394

Summary

A critical local privilege escalation via OS command injection vulnerability has been discovered in Plesk for Linux, affecting all versions from 18.0.34 before 18.0.79.9 and 18.0.80.5. The vulnerability allows a customer or reseller with shell access (or allowed to change their own shell access) to elevate privileges to the root account on the hosting server.

Affected Software

Weaknesses

• CWE-78: CWE-78 OS Command Injection

Workarounds

Disable shell access for customers or resellers if it is not required (make sure their service plan does not allow to change it)

References

• https://support.plesk.com/hc/en-us/articles/42968165026967-CVE-2026-67394-Vulnerability-in-Plesk-allows-privilege-escalation-to-root

• ←Previous
• Next→