CVE-2026-56021

Webmin information disclosure via regex pattern

State: Published
Severity: 6.9 Medium
Published: Jun 18, 2026
Updated: Jun 24, 2026
Reserved: Jun 18, 2026

Description

Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N	cisa-cg
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	cisa-cg

Weaknesses

CWE-185 Incorrect Regular Expression
CWE-777 Regular Expression without Anchors

Affected Products

Product	Versions
WebminWebmin	*Affected

References

urlrelease-notes
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urlvdb-entry

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