| Package | Affected versions | Patched versions |
|---|---|---|
| mediawiki/core | ≥ 1.34.0, < 1.34.3≥ 1.35.0-rc.0, < 1.35.0 | 1.34.31.35.0 |
| mediawiki | ≥ 1.34.0, < 1.34.4 | 1.34.4 |
An issue was discovered in MediaWiki 1.34.x before 1.34.3. On Special:Contributions, the NS filter uses unescaped messages as keys in the option key for an HTMLForm specifier. This is vulnerable to a mild XSS if one of those messages is changed to include raw HTML.
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