CVEvulnerability
CVE-2020-35479
6.1 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-12-18
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.1 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
- Weaknesses
- CWE-79
Description
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.
Affected configurations
• mediawiki mediawiki (>= 1.12.0 < 1.35.1)
• debian debian linux 9.0
• debian debian linux 10.0
• fedoraproject fedora 33
Related
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/ lists.fedoraproject.org
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html Mailing List, Release Notes, Vendor Advisory
- https://phabricator.wikimedia.org/T268938 Exploit, Vendor Advisory
- https://www.debian.org/security/2020/dsa-4816 Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/ lists.fedoraproject.org
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html Mailing List, Release Notes, Vendor Advisory
- https://phabricator.wikimedia.org/T268938 Exploit, Vendor Advisory
- https://www.debian.org/security/2020/dsa-4816 Third Party Advisory