CVE-2026-126781

HighCVSS 7.5/10Last modified Nov 11, 2026

Description

Webmin through 2.670 contains a users file injection vulnerability in acl/cert_issue.cgi that allows authenticated Webmin users to inject lines by supplying unvalidated certificate DN fields containing newlines. Attackers can end a DN field with a backslash and newline to add a second root entry with a known password hash, gaining Webmin root access after miniserv restarts.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-93

Affected software

No affected versions have been published.

Timeline

Published: Nov 11, 2026
Last modified: Nov 11, 2026
NVD status: Deferred

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