CVE-2025-61650: UserInfoCard is vulnerable to message key stored XSS

Published Feb 3, 2026
·
Updated

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files src/Services/CheckUserUserInfoCardService.Php.

This issue affects CheckUser: from before 795bf333272206a0189050d975e94b70eb7dc507.

Affected Software

1 affected component
Wikimedia Foundation CheckUser>795bf333272206a0189050d975e94b70eb7dc507

Event History

Feb 3, 2026
CVE Published
via MITRE·12:15 AM
Data Sourced
via MITRE·12:15 AM
DescriptionWeakness
Data Sourced
via NVD·01:15 AM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is the severity of CVE-2025-61650?

The severity of CVE-2025-61650 is classified as medium due to its potential for exploitation through stored XSS attacks.

2

How do I fix CVE-2025-61650?

To fix CVE-2025-61650, sanitize and validate all inputs in the CheckUserUserInfoCardService.php file to prevent XSS vulnerabilities.

3

What software is affected by CVE-2025-61650?

CVE-2025-61650 affects the Wikimedia Foundation's CheckUser software version prior to the fix implemented after commit 795bf333272206a0189050d975e94b70eb7dc507.

4

What kind of attack can be executed through CVE-2025-61650?

CVE-2025-61650 allows attackers to execute stored XSS attacks by injecting malicious scripts into user input fields.

5

Is there a known exploit for CVE-2025-61650?

As of the latest information available, there is no publicly known exploit specifically targeting CVE-2025-61650.

Contact

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