An issue was discovered in MediaWiki before 1.35.11, 1.36.x through 1.38.x before 1.38.7, and 1.39.x before 1.39.4. BlockLogFormatter.php in BlockLogFormatter allows XSS in the partial blocks feature.
https://www.debian.org/security/2023/dsa-5447
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DOAXEGYBOEM4JWB4J3BDH73NK2LCYC3O/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6CHRX6DSLAMVXCV2YMJEWOLTBEYSESE5/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2UIVGYECQGTUC2LLPVCZBPDLCTOHL2F6/
https://www.mediawiki.org/wiki/Release_notes/1.40#Other_changes_in_1.40
https://phabricator.wikimedia.org/T332889
Source: Mitre, NVD
Published: 2023-06-26
Updated: 2023-11-07
Base Score: 6.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.0102