CVE-2023-36806

Public Exploit
Contao cross site scripting vulnerability via input unit widget

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.30%
Vendor Advisory github.com
Affected: contao contao
Published at:
Updated at:

References

Link Tags
https://github.com/contao/contao/security/advisories/GHSA-4gpr-p634-922x vendor advisory
https://github.com/contao/contao/commit/5c9aff32cfc1f7dc452a045862ac2f86a6b9b4b4 patch
https://github.com/contao/contao/commit/c98585d36baa25fda69c062421e7e7eadc53c82b patch
https://github.com/contao/contao/commit/ccb64c777eb0f9c0e6490c9135d80e915d37cd32 patch
https://herolab.usd.de/security-advisories/usd-2023-0020/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2023-36806?
CVE-2023-36806 has been scored as a medium severity vulnerability.
How to fix CVE-2023-36806?
To fix CVE-2023-36806, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-36806 being actively exploited in the wild?
It is possible that CVE-2023-36806 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-36806?
CVE-2023-36806 affects contao contao.
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