Description
Cross-site scripting (XSS) vulnerability in MediaWiki before 1.6.11, 1.12.x before 1.12.2, and 1.13.x before 1.13.3, when Internet Explorer is used and uploads are enabled, or an SVG scripting browser is used and SVG uploads are enabled, allows remote authenticated users to inject arbitrary web script or HTML by editing a wiki page.
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 | 1:1.13.3-1 | — |
| Debian 13 | mediawiki | 1:1.13.3-1 | — |
| Debian 12 | mediawiki | 1:1.13.3-1 | — |
| Debian 5.0 | mediawiki | 1:1.12.0-2lenny2 | DTSA-186-1 |
| Debian 4.0 | mediawiki1.7 | 1.7.1-9etch1 | DSA-1901-1 |
Advisories 2
- DSA-1901-1 mediawiki1.7 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- DTSA-186-1 mediawiki - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- FEDORA-2008-11802 vendor-advisory
- DSA-1901 vendor-advisory
- 33133 third-party-advisory
- SUSE-SR:2009:004 vendor-advisory
- [mediawiki-announce] 20081215 MediaWiki 1.13.3, 1.12.2, 1.6.11 security update mailing-list
- 32844 vdb-entry
- FEDORA-2008-11688 vendor-advisory
- 33349 third-party-advisory