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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements Present

User Interaction Active

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00047.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Wikimedia Foundation CheckUser unaffected
Version Status Constraints
a3dc1bbcc33acbcca6831d6afaccbb1054c93a57, 0584eb2ad564648aa3ce9c555dd044dda02b55f4 affected < *

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Wikimedia Subscribe
Checkuser Subscribe

Project Subscriptions

Vendors Products
Wikimedia Subscribe
Checkuser Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://phabricator.wikimedia.org/T399093 cve-icon cve-icon
History

Wed, 04 Feb 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Wikimedia
Wikimedia checkuser
Vendors & Products Wikimedia
Wikimedia checkuser

Tue, 03 Feb 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 03 Feb 2026 00:15:00 +0000

Type Values Removed Values Added
Description 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.
Title UserInfoCard: Don't allow access to information about users who are suppressed if you don't have suppressor rights
References
Metrics cvssV4_0

{'score': 0.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published:

Updated: 2026-02-03T21:04:17.316Z

Reserved: 2025-09-29T13:18:40.092Z

Link: CVE-2025-61647

cve-icon Vulnrichment

Updated: 2026-02-03T21:04:14.460Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-03T00:16:10.520

Modified: 2026-02-03T16:44:03.343

Link: CVE-2025-61647

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-04T12:14:19Z

Weaknesses

No weakness.