Description
An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. Special:CheckUserLog shows usernames that have been hidden.
Metrics
CVSS 3.1 3.1/10
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:NWeakness enumeration
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| MediaWiki | CheckUser | < 1.35.11; >= 1.36.0, < 1.38.7; >= 1.39.0, < 1.39.4 |
References
Timeline
- Published
- Sep 14, 2026
- Last modified
- Sep 16, 2026
- NVD status
- Awaiting Analysis