CVE-2025-67478
Information Disclosure Vulnerability in Wikimedia CheckUser UserMailer.php
Publication date: 2026-02-03
Last updated on: 2026-04-14
Assigner: wikimedia-foundation
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
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 ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
There is no information provided regarding how this vulnerability affects compliance with standards such as GDPR or HIPAA.