An issue was discovered in MediaWiki before 1.35.10, 1.36.x through 1.38.x before 1.38.6, and 1.39.x before 1.39.3. An auto-block can occur for an untrusted X-Forwarded-For header.
https://www.debian.org/security/2023/dsa-5447
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZGK4NZPIJ5ET2ANRZOUYPCRIB5I64JR7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ONWHGOBFD6CQAEGOP5O375XAP2N6RUHT/
https://phabricator.wikimedia.org/T285159
https://lists.debian.org/debian-lts-announce/2023/08/msg00029.html
https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_39/RELEASE-NOTES-1.39
Source: Mitre, NVD
Published: 2023-03-31
Updated: 2025-02-18
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: Critical
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.00754