CVE-2026-67394

State: Published
Severity: 9.0 Critical
Published: Sep 1, 2026
Updated: Sep 1, 2026
Reserved: Jul 29, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	9.0 Critical	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H	hackerone

Weaknesses

CWE-78 OS Command Injection

Affected Products

Product	Versions
PleskWebPros	18.0.34 to before 18.0.79.9Affected 18.0.80 to before 18.0.80.5Affected

References

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

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