Description
Multiple cross-site scripting (XSS) vulnerabilities in the web-based installer (config/index.php) in MediaWiki 1.6 before 1.6.12, 1.12 before 1.12.4, and 1.13 before 1.13.4, when the installer is in active use, allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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 | 1:1.14.0-1 | — |
| Debian 13 | mediawiki | 1:1.14.0-1 | — |
| Debian 12 | mediawiki | 1:1.14.0-1 | — |
| Debian 4.0 | mediawiki1.7 | 1.7.1-9etch1 | DSA-1901-1 |
Advisories 1
- DSA-1901-1 mediawiki1.7 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://svn.wikimedia.org/svnroot/mediawiki/tags/REL1_6_12/phase3/RELEASE-NOTES
- DSA-1901 vendor-advisory
- 33881 third-party-advisory
- http://svn.wikimedia.org/svnroot/mediawiki/tags/REL1_12_4/phase3/RELEASE-NOTES
- [MediaWiki-announce] 20090207 MediaWiki releases: security update and new major branch mailing-list
- 33681 vdb-entry
- http://svn.wikimedia.org/svnroot/mediawiki/tags/REL1_13_4/phase3/RELEASE-NOTES
- ADV-2009-0368 vdb-entry