CVE-2019-12472 json
MediaWiki Incorrect Access Control vulnerability
published 2019-07-10 7 y ago modified 2026-06-17 4 mo ago also GHSA-7mqg-5fgh-xh4r , EUVD-2022-3036
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- 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-2019-12472
Exploit prediction
1.32% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
| GitHub | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | mediawiki/core | >=1.18.0, <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-284 Improper Access Control
References
-
lists.wikimedia.org
/pipermail/wikitech-l/2019-June/092152.html
web, patch, third-party-advisory
-
phabricator.wikimedia.org
/T199540
web, issue-tracking, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2019-12472
advisory
-
github.com
/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12472.yaml
web
-
github.com
/wikimedia/mediawiki
package
Sources
- CVE List CVE-2019-12472
- GitHub Advisory GHSA-7mqg-5fgh-xh4r
- NVD CVE-2019-12472
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