vulnerability
MediaWiki: CVE-2021-30153: Exposure of Resource to Wrong Sphere
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:L/Au:S/C:P/I:N/A:N) | Apr 15, 2023 | Apr 27, 2023 | May 6, 2026 |
Severity
4
CVSS
(AV:N/AC:L/Au:S/C:P/I:N/A:N)
Published
Apr 15, 2023
Added
Apr 27, 2023
Modified
May 6, 2026
Description
An issue was discovered in the VisualEditor extension in MediaWiki before 1.31.13, and 1.32.x through 1.35.x before 1.35.2. . When using VisualEditor to edit a MediaWiki user page belonging to an existing, but hidden, user, VisualEditor will disclose that the user exists. (It shouldn't because they are hidden.) This is related to ApiVisualEditor.
Solution
mediawiki-upgrade-latest
References
- CVE-2021-30153
- https://attackerkb.com/topics/CVE-2021-30153
- https://lists.wikimedia.org/hyperkitty/list/wikitech-l%40lists.wikimedia.org/message/XYBF5RSTJRMVCP7QBYK7643W75A3KCIY/
- https://lists.wikimedia.org/pipermail/wikitech-l/2021-April/094418.html
- https://phabricator.wikimedia.org/T270453
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-17089
- CWE-668
- EUVD-EUVD-2021-17089
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.