Wikimedia MediaWik exposed suppressed log in RevisionDelete page

published 2019-07-10 7y ago modified 2026-06-17 4mo ago also GHSA-733q-m38x-q7cc , EUVD-2022-2898

cvss: 6.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 71%
public exploits: 0; none known

Wikimedia MediaWiki through 1.32.1 has Incorrect Access Control. Suppressed log in RevisionDelete page is exposed. Fixed in 1.32.2, 1.31.2, 1.30.2 and 1.27.6.

Patch / fix

fixed in 2 distros 1

packagist mediawiki/core 1.27.6, 1.30.2, 1.31.2, 1.32.2
mediawiki mediawiki 1.27.6, 1.30.2, 1.31.2, 1.32.2

mediawiki Debian 14, Debian 13, Debian 12 1:1.31.2-1

debian advisories DEBIAN-CVE-2019-12470

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Exploit prediction

1.36% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	6.5	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N
GitHub	3.0	6.5	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	mediawiki/core	>=1.27.0, <1.27.6 >=1.30.0, <1.30.2 >=1.31.0, <1.31.2 >=1.32.0, <1.32.2	1.27.6 1.30.2 1.31.2 1.32.2

Classification

Weakness

CWE-862 Missing Authorization
CWE-284 Improper Access Control

References

debian.org /security/2019/dsa-4460
vendor-advisory, web, third-party-advisory
lists.wikimedia.org /pipermail/wikitech-l/2019-June/092152.html
web, mailing-list, release-notes, vendor-advisory
seclists.org /bugtraq/2019/Jun/12
mailing-list, web, issue-tracking, third-party-advisory
phabricator.wikimedia.org /T222038
web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2019-12470
advisory
github.com /FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12470.yaml
web
github.com /wikimedia/mediawiki
package

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.