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  5. CVE-2020-25815

CVE-2020-25815: MediaWiki Cross-site Scripting (XSS) vulnerability

May 24, 2022 (updated May 17, 2024)

An issue was discovered in MediaWiki 1.32.x through 1.34.x before 1.34.4. LogEventList::getFiltersDesc is insecurely using message text to build options names for an HTML multi-select field. The relevant code should use escaped() instead of text().

References

  • gerrit.wikimedia.org/g/mediawiki/core/+/ec76e14be658187544f07c1a249a047e1a75eaf8/includes/logging/LogEventsList.php
  • github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2020-25815.yaml
  • github.com/advisories/GHSA-2f58-vf6g-6p8x
  • github.com/wikimedia/mediawiki
  • 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
  • nvd.nist.gov/vuln/detail/CVE-2020-25815
  • phabricator.wikimedia.org/T256171

Code Behaviors & Features

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Affected versions

All versions starting from 1.32.0 before 1.34.3, all versions starting from 1.35.0-rc.0 before 1.35.0

Fixed versions

  • 1.34.3
  • 1.35.0

Solution

Upgrade to versions 1.34.3, 1.35.0 or above.

Impact 6.1 MEDIUM

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

Learn more about CVSS

Weakness

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Source file

packagist/mediawiki/core/CVE-2020-25815.yml

Spotted a mistake? Edit the file on GitLab.

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