Contao is a powerful open source CMS that allows you to create professional websites and scalable web applications. In versions of Contao prior to 4.13.3 it is possible to inject code into the canonical tag. As a workaround users may disable canonical tags in the root page settings.
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Link | Tags |
---|---|
https://github.com/contao/contao/commit/199206849a87ddd0fa5cf674eb3c58292fd8366c | third party advisory patch |
https://github.com/contao/contao/security/advisories/GHSA-m8x6-6r63-qvj2 | third party advisory |
https://contao.org/en/security-advisories/cross-site-scripting-via-canonical-url.html | vendor advisory |