CVE-2025-67738

Severity: high (CVSS 8.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-11 · updated 2026-10-14
Weakness: CWE-78

Description

squid/cachemgr.cgi in Webmin before 2.600 does not properly quote arguments. This is relevant if Webmin's Squid module and its Cache Manager feature are available, and an untrusted party is able to authenticate to Webmin and has certain Cache Manager permissions (the "cms" security option).

Affected products

Webmin: before 2.600 — fixed in 2.600

How to fix

Upgrade to a fixed version: Webmin 2.600. Check the vendor advisory for mitigations.

References

https://github.com/webmin/webmin/commit/1a52bf4d72f9da6d79250c66e51f41c6f5b880ee
https://github.com/webmin/webmin/compare/2.520...2.600
https://webmin.com/security/#privilige-escalation-using-squid-module-cve-2025-67738

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