An issue exists in the CheckUser extension for MediaWiki prior to 1.35.12, 1.36.x up to and including 1.39.x prior to 1.39.5, and 1.40.x prior to 1.40.1. A user can use a rest.php/checkuser/v0/useragent-clienthints/revision/ URL to store an arbitrary number of rows in cu_useragent_clienthints, leading to a denial of service.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
mediawiki mediawiki 1.40.0 |
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mediawiki mediawiki |
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