medium6.1
CVE-2020-25812
MediaWiki Cross-site Scripting (XSS) vulnerability
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | mediawiki/core | >= 1.34.0, < 1.34.3 | 1.34.3 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mediawiki | Mediawiki | from 1.34.0 before 1.34.4 |
| Fedoraproject | Fedora | Version 33 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://gerrit.wikimedia.org/g/mediawiki/core/+/ad4a3ba45fb955aa8c0eb3c83809b16b40a498b9/includes/specials/SpecialContributions.php#592
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6/
- https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html
- https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html
- https://github.com/advisories/GHSA-rj9p-8jxj-2ch4
- https://nvd.nist.gov/vuln/detail/CVE-2020-25812
- https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2020-25812.yaml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6
- https://phabricator.wikimedia.org/T255918