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CVE-2020-25813: MediaWiki Special:UserRights exposes the existence of hidden users

May 24, 2022 (updated May 17, 2024)

In MediaWiki before 1.31.9 and 1.32.x through 1.34.x before 1.34.3, Special:UserRights exposes the existence of hidden users.

References

  • github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2020-25813.yaml
  • github.com/advisories/GHSA-c4rj-wrmq-52rj
  • github.com/wikimedia/mediawiki
  • lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6
  • lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html
  • lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html
  • meta.wikimedia.org/wiki/Special:UserRights
  • nvd.nist.gov/vuln/detail/CVE-2020-25813
  • phabricator.wikimedia.org/T232568

Code Behaviors & Features

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Affected versions

All versions starting from 1.31.0 before 1.31.9, all versions starting from 1.32.0 before 1.34.3

Fixed versions

  • 1.31.9
  • 1.34.3

Solution

Upgrade to versions 1.31.9, 1.34.3 or above.

Impact 5.3 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Learn more about CVSS

Source file

packagist/mediawiki/core/CVE-2020-25813.yml

Spotted a mistake? Edit the file on GitLab.

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