Contao cross site scripting vulnerability via input unit widget
Vulnerability Description
Contao is an open source content management system. Starting in version 4.0.0 and prior to versions 4.9.42, 4.13.28, and 5.1.10, it is possible for untrusted backend users to inject malicious code into headline fields in the back end, which will be executed both in the element preview (back end) and on the website (front end). Installations are only affected if there are untrusted back end users who have the rights to modify headline fields, or other fields using the input unit widget. Contao 4.9.42, 4.13.28, and 5.1.10 have a patch for this issue. As a workaround, disable the login for all untrusted back end users.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2023-36806
Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/contao/contao/security/advisories/GHSA-4gpr-p634-922x
- https://github.com/contao/contao/commit/5c9aff32cfc1f7dc452a045862ac2f86a6b9b4b4
- https://github.com/contao/contao/commit/c98585d36baa25fda69c062421e7e7eadc53c82b
- https://github.com/contao/contao/commit/ccb64c777eb0f9c0e6490c9135d80e915d37cd32
- https://herolab.usd.de/security-advisories/usd-2023-0020/
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