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CVE WatchSep 14, 2026

CVE-2023-37252

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

CVSS

3.1

Low

EPSS

KEV

Exploit Today

0-100

Published: Sep 14, 2026 · Last modified: Sep 14, 2026 · CWE-669

EPSS · 30d

Not enough EPSS history yet.

Technical description

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

Official references
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