CVE-2026-67394: CWE-78 OS Command Injection in WebPros Plesk
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.
CVE-2026-67394: CWE-78 OS Command Injection in WebPros Plesk
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.
CVSS v4.0
Score 9.0critical
Affected software
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- hackerone
- Date Reserved
- 2026-07-29T15:00:02.293Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a963a79acd9273b491bc8b9
Added to database: 09/01/2026, 02:37:45 UTC
Last updated: 09/01/2026, 03:22:10 UTC
Views: 3
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