CVE-2019-12473

HIGH7.5EPSS 0.46%

Wikimedia Potential DOS due to slow WatchedItemStore::countVisitingWatchersMultiple

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

Also known as:GHSA-33xw-x3pr-rvqjDEBIAN-CVE-2019-12473

Description

Wikimedia MediaWiki 1.27.0 through 1.32.1 might allow DoS. Passing invalid titles to the API could cause a DoS by querying the entire watchlist table. 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>= 1.27.0, < 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:N/A:H

References (8)

ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2019-12473
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2019-12473
PATCHhttps://github.com/wikimedia/mediawiki
WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12473.yaml
WEBhttps://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
WEBhttps://phabricator.wikimedia.org/T204729
WEBhttps://seclists.org/bugtraq/2019/Jun/12
WEBhttps://www.debian.org/security/2019/dsa-4460