CVE-2023-37252
Low
Description
An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.
SeverityLow
CVSS3.1
Exploit probability—
Product
CheckUser
PublishedSep 14, 2026
First seenSep 14, 2026
Weakness typeCWE-669CWE-669
How to fix
Update
- MediaWiki CheckUser1.35.11, 1.38.7, 1.39.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| MediaWiki CheckUser | v < 1.35.11, 1.36.0 ≤ v < 1.38.7, 1.39.0 ≤ v < 1.39.4 | 1.35.11, 1.38.7, 1.39.4 |
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