vulnerability
MediaWiki: CVE-2021-30156: Exposure of Sensitive Information to an Unauthorized Actor
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:L/Au:S/C:N/I:P/A:N) | Apr 9, 2021 | Apr 15, 2021 | May 6, 2026 |
Severity
4
CVSS
(AV:N/AC:L/Au:S/C:N/I:P/A:N)
Published
Apr 9, 2021
Added
Apr 15, 2021
Modified
May 6, 2026
Description
An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Special:Contributions can leak that a "hidden" user exists.
Solution
mediawiki-upgrade-latest
References
- CVE-2021-30156
- https://attackerkb.com/topics/CVE-2021-30156
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/
- https://phabricator.wikimedia.org/T276306
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-17092
- CWE-200
- EUVD-EUVD-2021-17092
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