Description
Vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files includes/Mail/UserMailer.Php.

This issue affects CheckUser: from * before 1.39.14, 1.43.4, 1.44.1.
Published: 2026-02-03
Score: 0 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4428-1 mediawiki security update
Debian DSA Debian DSA DSA-6085-1 mediawiki security update
References
History

Tue, 14 Apr 2026 14:15:00 +0000

Type Values Removed Values Added
First Time appeared Mediawiki
Mediawiki checkuser
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:a:mediawiki:checkuser:*:*:*:*:*:mediawiki:*:*
cpe:2.3:a:mediawiki:checkuser:1.44.0:*:*:*:*:mediawiki:*:*
Vendors & Products Mediawiki
Mediawiki checkuser
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


Wed, 04 Feb 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Wikimedia
Wikimedia checkuser
Vendors & Products Wikimedia
Wikimedia checkuser

Tue, 03 Feb 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 03 Feb 2026 13:15:00 +0000

Type Values Removed Values Added
Description Vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files includes/Mail/UserMailer.Php. This issue affects CheckUser: from * before 1.39.14, 1.43.4, 1.44.1.
Title Wrong E-Mail address composition for usernames with a comma and Umlauts in it like "Döe, Jähn"
References
Metrics cvssV4_0

{'score': 0, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:U'}


Subscriptions

Mediawiki Checkuser
Wikimedia Checkuser
cve-icon MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published:

Updated: 2026-03-02T17:43:34.432Z

Reserved: 2025-12-08T17:51:48.871Z

Link: CVE-2025-67478

cve-icon Vulnrichment

Updated: 2026-02-03T15:29:09.612Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-03T02:16:08.840

Modified: 2026-04-14T14:08:48.420

Link: CVE-2025-67478

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-04T12:14:16Z

Weaknesses