CVE-2025-61647: UserInfoCard: Don't allow access to information about users who are suppressed if you don't have suppressor rights

Published Feb 3, 2026
·
Updated

Vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files src/Api/Rest/Handler/UserInfoHandler.Php.

This issue affects CheckUser: from a3dc1bbcc33acbcca6831d6afaccbb1054c93a57, 0584eb2ad564648aa3ce9c555dd044dda02b55f4.

Affected Software

1 affected component
Wikimedia Foundation CheckUser>=a3dc1bbcc33acbcca6831d6afaccbb1054c93a57<=0584eb2ad564648aa3ce9c555dd044dda02b55f4

Event History

Feb 3, 2026
CVE Published
via MITRE·12:02 AM
Data Sourced
via MITRE·12:02 AM
Description
Data Sourced
via NVD·12:16 AM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is the severity of CVE-2025-61647?

The severity of CVE-2025-61647 is classified as a moderate vulnerability due to its impact on user information accessibility.

2

How do I fix CVE-2025-61647?

To mitigate CVE-2025-61647, ensure that user suppressor rights are properly configured to prevent unauthorized access to suppressed user information.

3

What software is affected by CVE-2025-61647?

CVE-2025-61647 affects the Wikimedia Foundation CheckUser version between a3dc1bbcc33acbcca6831d6afaccbb1054c93a57 and 0584eb2ad564648aa3ce9c555dd044dda02b55f4.

4

What type of vulnerability is CVE-2025-61647?

CVE-2025-61647 is a user information disclosure vulnerability related to insufficient access control in the Wikimedia Foundation CheckUser.

5

Who can be affected by CVE-2025-61647?

Users without suppressor rights in the Wikimedia Foundation CheckUser are at risk of having their information accessed improperly due to CVE-2025-61647.

Contact

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