CVE-2021-44856

MEDIUM

MediaWiki < 1.35.5, 1.36.x < 1.36.3, 1.37.x < 1.37.1 - AbuseFilter Bypass via Special:ChangeContentModel

Title source: llm
STIX 2.1

Description

An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. A title blocked by AbuseFilter can be created via Special:ChangeContentModel due to the mishandling of the EditFilterMergedContent hook return value.

References (2)

Core 2
Core References
Issue Tracking, Patch, Vendor Advisory
https://phabricator.wikimedia.org/T271037

Scores

CVSS v3 5.3
EPSS 0.0017
EPSS Percentile 37.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-754
Status published
Products (2)
mediawiki/mediawiki 1.37.0 (4 CPE variants)
mediawiki/mediawiki < 1.35.5
Published Dec 26, 2022
Tracked Since Feb 18, 2026