An Incorrect Access Control vulnerability was found in Wikimedia MediaWiki 1.18.0 through 1.32.1. It is possible to bypass the limits on IP range blocks ($wgBlockCIDRLimit) by using the API. Fixed in 1.32.2, 1.31.2, 1.30.2 and 1.27.6.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mediawiki | Mediawiki | 1.18.0 (including) | 1.27.6 (excluding) |
| Mediawiki | Mediawiki | 1.30.0 (including) | 1.30.2 (excluding) |
| Mediawiki | Mediawiki | 1.31.0 (including) | 1.31.2 (excluding) |
| Mediawiki | Mediawiki | 1.32.0 (including) | 1.32.2 (excluding) |