An issue was discovered in MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4. The non-jqueryMsg version of mw.message().parse() doesn't escape HTML. This affects both message contents (which are generally safe) and the parameters (which can be based on user input). (When jqueryMsg is loaded, it correctly accepts only whitelisted tags in message contents, and escapes all parameters. Situations with an unloaded jqueryMsg are rare in practice, but can for example occur for Special:SpecialPages on a wiki with no extensions installed.)
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2020-09-27T20:31:44

Updated: 2024-08-04T15:40:36.947Z

Reserved: 2020-09-23T00:00:00

Link: CVE-2020-25828

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-09-27T21:15:12.877

Modified: 2023-11-07T03:20:25.710

Link: CVE-2020-25828

cve-icon Redhat

Severity : Moderate

Publid Date: 2020-09-27T00:00:00Z

Links: CVE-2020-25828 - Bugzilla