Explore

Latest Releases
Registries
Security Advisories
CollectionsPreview

Theme

Contact© 2026 Release Alert

Security Advisories

CVEs affecting projects tracked on Release Alert, from NVD & OSV.

© 2026 Release Alert

Privacy Policy
Terms of Service
Contact

CVE-2021-30156 — MEDIUM severity vulnerability | Release Alert

CVE-2021-30156

4.3

MEDIUMCVSS v3

Published

April 9, 2021

CVSS v2

4 MEDIUM

Affected

9 projects

Assigned by

MITRE

Severity scale

010

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.

wikimedia/mediawiki

GitHub🌻 The collaborative editing software that runs Wikipedia. Mirror from https://gerrit.wikimedia.org/g/mediawiki/core. See https://mediawiki.org/wiki/Developer_access for contributing.

>= 1.32.0, < 1.35.2, < 1.31.12NVD

NPMA JavaScript framework for the MediaWiki API.

>= 1.32.0, < 1.35.2, < 1.31.12NVD

More on this CVE

NVD↗GitHub Advisory↗

Python Package IndexMediaWiki Syntax to HTML

>= 1.32.0, < 1.35.2, < 1.31.12NVD

Crates.ioA MediaWiki client library

>= 1.32.0, < 1.35.2, < 1.31.12NVD

Crates.ioBase library for interacting with Fedora web services

= 33, = 34NVD

Python Package IndexPlaceholder for the fedora name

= 33, = 34NVD

Docker HubOfficial Docker builds of Fedora

= 33, = 34NVD

NPMDigital Repository Ireland - fedora backend operations

= 33, = 34NVD

RubyGemsSet of capistrano recipies for automating creation of Fedora servers.

= 33, = 34NVD