Vulnerability Description
An issue was discovered in MediaWiki 1.34.x before 1.34.4. 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mediawiki | Mediawiki | >= 1.34.0, < 1.34.4 |
| Fedoraproject | Fedora | 33 |
Related Weaknesses (CWE)
References
- https://gerrit.wikimedia.org/g/mediawiki/core/+/ad4a3ba45fb955aa8c0eb3c83809b16bVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.htmlMailing ListVendor Advisory
- https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.htmlMailing ListVendor Advisory
- https://gerrit.wikimedia.org/g/mediawiki/core/+/ad4a3ba45fb955aa8c0eb3c83809b16bVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.htmlMailing ListVendor Advisory
- https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.htmlMailing ListVendor Advisory
FAQ
What is CVE-2020-25812?
CVE-2020-25812 is a vulnerability with a CVSS score of 6.1 (MEDIUM). An issue was discovered in MediaWiki 1.34.x before 1.34.4. On Special:Contributions, the NS filter uses unescaped messages as keys in the option key for an HTMLForm specifier. This is vulnerable to a ...
How severe is CVE-2020-25812?
CVE-2020-25812 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-25812?
Check the references section above for vendor advisories and patch information. Affected products include: Mediawiki Mediawiki, Fedoraproject Fedora.