An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

References
History

Mon, 14 Sep 2026 05:30:00 +0000

Type Values Removed Values Added
First Time appeared Mediawiki
Mediawiki checkuser
Weaknesses CWE-669
CPEs cpe:2.3:a:mediawiki:checkuser:*:*:*:*:*:*:*:*
Vendors & Products Mediawiki
Mediawiki checkuser
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N'}


Mon, 14 Sep 2026 05:15:00 +0000

Type Values Removed Values Added
Description An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-14T05:12:30.342Z

Reserved: 2023-06-29T00:00:00.000Z

Link: CVE-2023-37252

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-14T05:16:57.580

Modified: 2026-09-14T06:16:52.380

Link: CVE-2023-37252

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-14T06:30:12Z

Weaknesses