CVE-2021-44856 — Improper Check for Unusual or Exceptional Conditions in Mediawiki

CWE-754 — Improper Check for Unusual or Exceptional Conditions5 documents5 sources
Severity
5.3MEDIUMNVD
EPSS
0.2%
top 60.97%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
MediawikiDebian Mediawiki
Timeline
PublishedDec 26

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NExploitability: 3.9 | Impact: 1.4

Affected Packages3 packages

▶debiandebian/mediawiki< mediawiki 1:1.35.5-1 (bookworm)
▶NVDmediawiki/mediawiki1.36.0 — 1.36.3+2
▶Debianmediawiki/mediawiki< 1:1.35.8-1~deb11u1+3

Patches

Patch: phabricator.wikimedia.org ↗Patch: phabricator.wikimedia.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-gmch-57w2-pj7q: An issue was discovered in MediaWiki before 1↗2022-12-26
▶
OSV
CVE-2021-44856: An issue was discovered in MediaWiki before 1↗2022-12-26
▶

📋Vendor Advisories

2
Red Hat
mediawiki: Title blocked in AbuseFilter can be created via Special:ChangeContentModel due to the mishandling of EditFilterMergedContent hook return value↗2022-12-26
▶
Debian
CVE-2021-44856: mediawiki - An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1....↗2021
▶
CVE-2021-44856 — Mediawiki vulnerability | cvebase