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.
References (3)
Core 3
Core References
Exploit, Patch, Vendor Advisory x_refsource_misc
https://phabricator.wikimedia.org/T276306
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/
Scores
CVSS v3
4.3
EPSS
0.0019
EPSS Percentile
40.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Details
CWE
CWE-200
Status
published
Products (3)
fedoraproject/fedora
33
fedoraproject/fedora
34
mediawiki/mediawiki
< 1.31.12
Published
Apr 09, 2021
Tracked Since
Feb 18, 2026