CVE-2020-25814
MEDIUM6.1EPSS 0.34%MediaWiki Cross-site Scripting (XSS) vulnerability
Published: 5/24/2022Modified: 4/28/2026
Description
In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an <a> tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an <a href ="javascript... that executes when clicked.
Affected packages (3)
- Bitnami/mediawikifrom 0, < 1.31.10, >= 1.32.0, < 1.34.4
- Debian/mediawikifrom 0, < 1:1.35.0-1
- Packagist/mediawiki/core>= 1.31.0, < 1.31.9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
References (10)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2020-25814
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2020-25814
- PATCHhttps://github.com/wikimedia/mediawiki
- WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2020-25814.yaml
- WEBhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6/
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6
- WEBhttps://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html
- WEBhttps://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html
- WEBhttps://phabricator.wikimedia.org/T86738
- WEBhttps://www.mediawiki.org/wiki/ResourceLoader/Core_modules#mediawiki.jqueryMsg