Vulnerability CVE-2022-24899
Published: 2022-05-06

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.

Type:

CWE-79

 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'))

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Contao -> Contao 

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