An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Users can bypass intended restrictions on deleting pages in certain "fast double move" situations. MovePage::isValidMoveTarget() uses FOR UPDATE, but it's only called if Title::getArticleID() returns non-zero with no special flags. Next, MovePage::moveToInternal() will delete the page if getArticleID(READ_LATEST) is non-zero. Therefore, if the page is missing in the replica DB, isValidMove() will return true, and then moveToInternal() will unconditionally delete the page if it can be found in the master.
CVSS Details
- CVSS 3.1 Base Score: 4.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade mediawiki | Apr 12, 2021 | Apr 9, 2021 |
| Gentoo Linux | — | Upgrade www-apps/mediawiki. | Jul 19, 2021 | Apr 9, 2021 |
| Mediawiki | — | Upgrade MediaWiki to the latest version | Apr 21, 2021 | Apr 9, 2021 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Apr 9, 2021 |
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