CVE-2026-126780
highWebmin through 2.670 contains a privilege escalation vulnerability in acl/save_group.cgi that allows delegated administrators to grant unauthorized modules by…
Webmin through 2.670 contains a privilege escalation vulnerability in acl/save_group.cgi that allows delegated administrators to grant unauthorized modules by submitting arbitrary module lists in the mod parameter. Attackers with Webmin Users module access can create or edit groups holding modules like Command Shell and assign themselves membership to execute commands as root.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/webmin/webmin/blob/2.670/acl/save_group.cgi#L83 disclosure@vulncheck.com
- https://github.com/webmin/webmin/commit/be54ba38c3b86a3647a62327e1de81d5d0db098a disclosure@vulncheck.com
- https://github.com/webmin/webmin/commit/c861e308f4ee4cff1795ccc7621fc75623e1bb90 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/webmin-through-2.670-privilege-escalation-via-acl-sav... disclosure@vulncheck.com

