Skip to content
Fencer Intel
high 7.5

CVE-2019-12472 json

MediaWiki Incorrect Access Control vulnerability

published 7y ago modified 4mo 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

Is CVE-2019-12472 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

1.33% 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 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

References

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.