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Fencer Intel
critical 9.8

CVE-2019-12468 json

Wikimedia MediaWiki Incorrect Access Control vulnerability

published 7y ago modified 4mo ago also GHSA-wrhx-3pxr-6vgg , EUVD-2022-5631

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.3%
EPSS 3.3% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

An Incorrect Access Control vulnerability was found in Wikimedia MediaWiki 1.27.0 through 1.32.1. Directly POSTing to Special:ChangeEmail would allow for bypassing re-authentication, allowing for potential account takeover.

Patch / fix

  • packagist mediawiki/core 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-2019-12468

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Exploit prediction

3.33% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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-306 Missing Authentication for Critical Functionality
  • CWE-284 Improper Access Control

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.