Description
MediaWiki before 1.19.6 and 1.20.x before 1.20.5 does not allow extensions to prevent password changes without using both Special:PasswordReset and Special:ChangePassword, which allows remote attackers to bypass the intended restrictions of an extension that only implements one of these blocks.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | mediawiki | 1:1.19.6-1 | — |
| Debian 13 | mediawiki | 1:1.19.6-1 | — |
| Debian 12 | mediawiki | 1:1.19.6-1 | — |
| Debian 7 | mediawiki | 1:1.19.14+dfsg-0+deb7u1 | DSA-2891-1 |
| Debian 7 | mediawiki-extensions | 3.5~deb7u1 | DSA-2891-1 |
Advisories 1
- DSA-2891-1 mediawiki - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- FEDORA-2013-7714 vendor-advisory
- 55433 third-party-advisory
- FEDORA-2013-7654 vendor-advisory
- FEDORA-2013-7701 vendor-advisory
- GLSA-201310-21 vendor-advisory
- [MediaWiki-announce] 20130430 MediaWiki Security Release: 1.20.5 and 1.19.6 mailing-list
- https://bugzilla.wikimedia.org/show_bug.cgi?id=46590