In MediaWiki before 1.35.1, the messages userrights-expiry-current and userrights-expiry-none can...
Vulnerability Description
In MediaWiki before 1.35.1, the messages userrights-expiry-current and userrights-expiry-none can contain raw HTML. XSS can happen when a user visits Special:UserRights but does not have rights to change all userrights, and the table on the left side has unchangeable groups in it. (The right column with the changeable groups is not affected and is escaped correctly.)
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-35475
Credits & Attribution
No credits recorded in the NVD database.
References
- https://phabricator.wikimedia.org/T268917
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html
- https://www.debian.org/security/2020/dsa-4816
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/
More from mediawiki
View All →Affected Vendor
mediawiki
View all reports →Affected Software
Timeline
CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.