An issue was discovered in ApiPageSet.php in MediaWiki before 1.35.12, 1.36.x through 1.39.x before 1.39.5, and 1.40.x before 1.40.1. It allows attackers to cause a denial of service (unbounded loop and RequestTimeoutException) when querying pages redirected to other variants with redirects and converttitles set.
| Software | From | Fixed in |
|---|---|---|
| mediawiki / mediawiki | 1.40.0 | 1.40.0.x |
| mediawiki / mediawiki | - | 1.35.12 |
| mediawiki / mediawiki | 1.36.0 | 1.39.5 |
| debian / debian_linux | 11.0 | 11.0.x |
| debian / debian_linux | 12.0 | 12.0.x |