Vulnerability · Published May 5, 2022 · Assigned by GitHub_M

CVE-2022-24899Cross site scripting via canonical tag

High 7.2

In plain English

A high-severity cross-site scripting in contao from contao. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.5% (higher than 92% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei. Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)4.5%top 8.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack tooling1Nuclei

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	contao/contao	4.13.3	GHSA-m8x6-6r63-qvj2
Packagist	contao/core-bundle	4.13.3	GHSA-m8x6-6r63-qvj2

Affected products (as reported)

Vendor	Product	Versions
contao	contao	< 4.13.3

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References

https://github.com/contao/contao/commit/199206849a87ddd0fa5cf674eb3c58292fd8366c x_refsource_MISC
https://github.com/contao/contao/security/advisories/GHSA-m8x6-6r63-qvj2 x_refsource_CONFIRM
https://contao.org/en/security-advisories/cross-site-scripting-via-canonical-url.html x_refsource_MISC