CVE-2020-35479 in MediaWiki

Summary

by MITRE • 12/18/2020

MediaWiki before 1.35.1 allows XSS via BlockLogFormatter.php. Language::translateBlockExpiry itself does not escape in all code paths. For example, the return of Language::userTimeAndDate is is always unsafe for HTML in a month value. This affects MediaWiki 1.12.0 and later.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

• Disclosure: 12/18/2020
• Moderation: accepted
• Entry: VDB-166581
• CPE: ready
• CWE: CWE-79 (confirmed)
• CVSS: 4.3 (VulDB)
• EPSS: 0.01476
• KEV: no
• Activities: very low
• Sector: Hostingprovider, Lawfirm, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2020-35479
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-35479
• CVE Details: https://www.cvedetails.com/cve/CVE-2020-35479/