CVE-2020-25814
In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur.
Does this matter?
Lower severity and a low EPSS score (1.35%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 1.35% probability · 71th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- mediawiki/mediawiki · fedoraproject/fedora
- Source
- cve@mitre.org
EPSS 1.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6/
- https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.htmlMailing List, Release Notes, Vendor Advisory
- https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.htmlMailing List, Release Notes, Vendor Advisory
- https://www.mediawiki.org/wiki/ResourceLoader/Core_modules#mediawiki.jqueryMsgVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6/
- https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.htmlMailing List, Release Notes, Vendor Advisory
- https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.htmlMailing List, Release Notes, Vendor Advisory
- https://www.mediawiki.org/wiki/ResourceLoader/Core_modules#mediawiki.jqueryMsgVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.