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.
https://www.debian.org/security/2019/dsa-4460
https://seclists.org/bugtraq/2019/Jun/12
https://phabricator.wikimedia.org/T197279
https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
https://lists.wikimedia.org/pipermail/mediawiki-announce/
Source: Mitre, NVD
Published: 2019-07-10
Updated: 2020-08-24
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS: 0.00423