Description
includes/upload/UploadBase.php in MediaWiki before 1.19.12, 1.20.x and 1.21.x before 1.21.6, and 1.22.x before 1.22.3 does not prevent use of invalid namespaces in SVG files, which allows remote attackers to conduct cross-site scripting (XSS) attacks via an SVG upload, as demonstrated by use of a W3C XHTML namespace in conjunction with an IFRAME element.
Metrics
CVSS 2.0 4.3/10
AV:N/AC:M/Au:N/C:N/I:P/A:NWeakness enumeration
Affected software
No affected versions have been published.
Timeline
- Published
- Mar 2, 2014
- Last modified
- Jun 17, 2026
- NVD status
- Modified