CVE-2026-126780

Webmin through 2.670 Privilege Escalation via acl/save_group.cgi

Published Nov 11, 2026 CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Description 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.
Title Webmin through 2.670 Privilege Escalation via acl/save_group.cgi
First Time appeared Webmin
Webmin webmin
Weaknesses CWE-269
CPEs cpe:2.3:a:webmin:webmin:*:*:*:*:*:*:*:*
Vendors & Products Webmin
Webmin webmin
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 12, 2026, 5:55 PM
Reserved
Nov 11, 2026, 6:27 PM
Status
Deferred
Published
Nov 11, 2026, 7:17 PM
Modified
Nov 12, 2026, 6:17 PM