CVE-2021-46149

HIGH

MediaWiki < 1.35.5, 1.36.x < 1.36.3, 1.37.x < 1.37.1 - Denial of Service via Language Name Search

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 denial of service (resource consumption) can be accomplished by searching for a very long key in a Language Name Search.

References (2)

Core 2
Core References
Third Party Advisory x_refsource_misc
https://phabricator.wikimedia.org/T293749

Scores

CVSS v3 7.5
EPSS 0.0027
EPSS Percentile 50.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-400
Status published
Products (1)
mediawiki/mediawiki < 1.35.5
Published Jan 10, 2022
Tracked Since Feb 18, 2026