Critical severity · published Sep 1, 2026
CVE-2026-67394
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…
9.0
CVSS
1.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 70% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PL
Plesk · WebPros
18.0.34 before 18.0.79.9; 18.0.80 before 18.0.80.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-67394
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-67394
support.plesk.com
https://support.plesk.com/hc/en-us/articles/42968165026967-CVE-2026-67394-Vulnerability-in-Plesk-allows-privilege-escalation-to-root
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