Vulnerability Description
MediaWiki before 1.35.1 allows XSS via BlockLogFormatter.php. MediaWiki:blanknamespace potentially can be output as raw HTML with SCRIPT tags via LogFormatter::makePageLink(). This affects MediaWiki 1.33.0 and later.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mediawiki | Mediawiki | >= 1.33.0, < 1.35.1 |
| Fedoraproject | Fedora | 33 |
Related Weaknesses (CWE)
References
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.htMailing ListRelease NotesVendor Advisory
- https://phabricator.wikimedia.org/T268938ExploitThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.htMailing ListRelease NotesVendor Advisory
- https://phabricator.wikimedia.org/T268938ExploitThird Party Advisory
FAQ
What is CVE-2020-35478?
CVE-2020-35478 is a vulnerability with a CVSS score of 6.1 (MEDIUM). MediaWiki before 1.35.1 allows XSS via BlockLogFormatter.php. MediaWiki:blanknamespace potentially can be output as raw HTML with SCRIPT tags via LogFormatter::makePageLink(). This affects MediaWiki 1...
How severe is CVE-2020-35478?
CVE-2020-35478 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-2020-35478?
Check the references section above for vendor advisories and patch information. Affected products include: Mediawiki Mediawiki, Fedoraproject Fedora.