CVE-2021-30156
published 2021-04-09CVE-2021-30156: 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.
PriorityP420medium4.3CVSS 3.1
AVNACLPRLUINSUCNILAN
EPSS
1.18%
64.5th percentile
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.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | mediawiki | — | — |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| mediawiki | mediawiki | < 1.31.12 | 1.31.12 |
| mediawiki | mediawiki | >= 1.32.0 < 1.35.2 | 1.35.2 |
CVSS provenance
nvdv3.14.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
nvdv2.04.0MEDIUMAV:N/AC:L/Au:S/C:N/I:P/A:N
osv4.3MEDIUM
vendor_debian4.3LOW
vendor_redhat4.3MEDIUM
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Red Hat
mediawiki: Special: Contributions toolbar reveals existence of hidden users
vendor_redhat·2021-04-06·CVSS 4.3
CVE-2021-30156 [MEDIUM] CWE-200 mediawiki: Special: Contributions toolbar reveals existence of hidden users
mediawiki: Special: Contributions toolbar reveals existence of hidden users
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.
In mediawiki package, the "Special:Contributions" functionality can leak information that a "hidden" user exists.
Statement: The mediawiki package was removed from OpenShift Container Platform (OCP) in version 4.3, therefore for OCP 4 has been marked as out of support scope.
Package: mediawiki (Red Hat OpenShift Container Platform 3.11) - Will not fix
Package: mediawiki (Red Hat OpenShift Container Platform 4) - Out of support scope
Debian
CVE-2021-30156: mediawiki - An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x be...
vendor_debian·2021·CVSS 4.3
CVE-2021-30156 [MEDIUM] CVE-2021-30156: mediawiki - An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x be...
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.
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved
sid: resolved
trixie: resolved
GHSA
GHSA-4w3g-mpj2-j247: An issue was discovered in MediaWiki before 1
ghsa_unreviewed·2022-05-24
CVE-2021-30156 [MEDIUM] CWE-732 GHSA-4w3g-mpj2-j247: An issue was discovered in MediaWiki before 1
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.
OSV
CVE-2021-30156: An issue was discovered in MediaWiki before 1
osv·2021-04-09·CVSS 4.3
CVE-2021-30156 [MEDIUM] CVE-2021-30156: An issue was discovered in MediaWiki before 1
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
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/T276306https://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
2021-04-09
Published