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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade mediawiki | Sep 28, 2020 | Jun 24, 2020 |
| Mediawiki | — | Upgrade MediaWiki to the latest version | Jul 8, 2020 | Jun 24, 2020 |
| Ubuntu | — | Upgrade mediawiki | Nov 19, 2024 | Jun 24, 2020 |
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