In MediaWiki before 1.31.8, 1.32.x and 1.33.x before 1.33.4, and 1.34.x before 1.34.2, private wikis behind a caching server using the img_auth.php image authorization security feature may have had their files cached publicly, so any unauthorized user could view them. This occurs because Cache-Control and Vary headers were mishandled.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mediawiki | Mediawiki | * | 1.31.8 (excluding) |
| Mediawiki | Mediawiki | 1.32.0 (including) | 1.33.4 (excluding) |
| Mediawiki | Mediawiki | 1.34 (including) | 1.34.2 (excluding) |
| Mediawiki | Ubuntu | bionic | * |
| Mediawiki | Ubuntu | devel | * |
| Mediawiki | Ubuntu | eoan | * |
| Mediawiki | Ubuntu | esm-apps/bionic | * |
| Mediawiki | Ubuntu | esm-apps/focal | * |
| Mediawiki | Ubuntu | focal | * |
| Mediawiki | Ubuntu | groovy | * |
| Mediawiki | Ubuntu | hirsute | * |
| Mediawiki | Ubuntu | impish | * |
| Mediawiki | Ubuntu | jammy | * |
| Mediawiki | Ubuntu | kinetic | * |
| Mediawiki | Ubuntu | lunar | * |
| Mediawiki | Ubuntu | mantic | * |
| Mediawiki | Ubuntu | noble | * |
| Mediawiki | Ubuntu | oracular | * |
| Mediawiki | Ubuntu | trusty | * |
| Mediawiki | Ubuntu | upstream | * |