MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows remote attackers to inject > (greater than) characters via the id attribute of a headline.
https://www.debian.org/security/2017/dsa-4036
http://www.securitytracker.com/id/1039812
https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-November/000216.html
Source: Mitre, NVD
Published: 2017-11-15
Updated: 2025-04-20
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 5.3
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS: 0.00832