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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-02-03

Last Modified

2026-04-14

Generated

2026-07-06

AI Q&A

2026-02-04

EPSS Evaluated

2026-07-05

NVD

CVE-2025-67478

EUVD

EUVD-2025-206755

Affected Vendors & Products

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

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Detection Guidance

I don't know

Mitigation Strategies

I don't know

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.

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