CVE-2025-67478
Unknown Unknown - Not Provided
Information Disclosure Vulnerability in Wikimedia CheckUser UserMailer.php

Publication date: 2026-02-03

Last updated on: 2026-04-14

Assigner: wikimedia-foundation

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.
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Meta Information
Published
2026-02-03
Last Modified
2026-04-14
Generated
2026-06-16
AI Q&A
2026-02-03
EPSS Evaluated
2026-06-14
NVD
CVE-2025-67478
EUVD
EUVD-2025-206755
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
mediawiki checkuser From 1.39.0 (inc) to 1.39.14 (exc)
mediawiki checkuser From 1.43.0 (inc) to 1.43.4 (exc)
mediawiki checkuser 1.44.0
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability exists in the Wikimedia Foundation's CheckUser extension, specifically in the program file includes/Mail/UserMailer.Php. It affects versions of CheckUser before 1.39.14, 1.43.4, and 1.44.1. No further technical details about the nature of the vulnerability are provided.

Impact Analysis

The specific impact of this vulnerability is not detailed in the provided information. Given it is related to the CheckUser extension and a mail-related PHP file, potential impacts could involve unauthorized access or manipulation related to user mail functions, but this cannot be confirmed from the available data.

Compliance Impact

There is no information provided regarding how this vulnerability affects compliance with standards such as GDPR or HIPAA.

Mitigation Strategies

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Detection Guidance

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