CVE-2019-12472

HIGH7.5EPSS 0.15%

MediaWiki Incorrect Access Control vulnerability

Published: 5/24/2022Modified: 4/28/2026

Also known as:GHSA-7mqg-5fgh-xh4rDEBIAN-CVE-2019-12472

Description

An Incorrect Access Control vulnerability was found in Wikimedia MediaWiki 1.18.0 through 1.32.1. It is possible to bypass the limits on IP range blocks ($wgBlockCIDRLimit) by using the API. Fixed in 1.32.2, 1.31.2, 1.30.2 and 1.27.6.

Affected packages (2)

Debian/mediawikifrom 0, < 1:1.31.2-1
Packagist/mediawiki/core>= 1.18.0, < 1.27.6

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	HIGH7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References (6)

ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2019-12472
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2019-12472
PATCHhttps://github.com/wikimedia/mediawiki
WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12472.yaml
WEBhttps://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
WEBhttps://phabricator.wikimedia.org/T199540