Wikimedia MediaWiki 1.27.0 through 1.32.1 might allow DoS. Passing invalid titles to the API could cause a DoS by querying the entire watchlist table. Fixed in 1.32.2, 1.31.2, 1.30.2 and 1.27.6.
https://www.debian.org/security/2019/dsa-4460
https://seclists.org/bugtraq/2019/Jun/12
https://phabricator.wikimedia.org/T204729
https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
Source: Mitre, NVD
Published: 2019-07-10
Updated: 2020-08-24
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: High
EPSS: 0.00469