Security advisories

Here you will find a list of vulnerabilities that have already been found and fixed in Contao. If you think that you have found a security issue in Contao, please report it according to our security policy.

Insert tag injection via canonical URLs

by Leo Feyer

Date: 2024-09-17
CVE ID: CVE-2024-45612

It is possible to inject insert tags in canonical URLs which will be replaced when the page is rendered.

Affected versions

Contao 4.13 up to 4.13.48
Contao 5.0
Contao 5.1
Contao 5.2
Contao 5.3 up to 5.3.14
Contao 5.4 up to 5.4.2

Suggested solution

Upgrade to Contao 4.13.49, 5.3.15 or 5.4.3.

Workaround

Disable canonical tags in the settings of the website root page.

More information

https://github.com/contao/contao/security/advisories/GHSA-2xpq-xp6c-5mgj

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