CVE-2025-53479
5.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Summary
The CheckUser extension’s Special:CheckUser interface is vulnerable to reflected XSS via the rev-deleted-user message. This message is rendered without proper escaping, making it possible to inject JavaScript through the uselang=x-xss language override mechanism.
This issue affects Mediawiki - CheckUser extension: from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Wikimedia Foundation | Mediawiki - CheckUser extension | 1.42.x < 1.42.7 | affected |
| Wikimedia Foundation | Mediawiki - CheckUser extension | 1.43.x < 1.43.2 | affected |
Weaknesses
- CWE-79: CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: partial
Additional References
References
- https://phabricator.wikimedia.org/T394693
- https://gerrit.wikimedia.org/r/q/I159e14543912cb3bc7f4a00c3090c0285b154786
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