CVE-2023-36806: Contao cross site scripting vulnerability via input unit widget
First published: Tue Jul 25 2023(Updated: )
### Impact Authenticated users can inject malicious code in widgets with units, which is then executed both in the element preview (back end) and on the website (front end). ### Patches Update to Contao 4.9.42, 4.13.28 or 5.1.10. ### Workarounds Disable login for all untrusted back end users. ### References https://contao.org/en/security-advisories/cross-site-scripting-in-widgets-with-units ### For more information If you have any questions or comments about this advisory, open an issue in [contao/contao](https://github.com/contao/contao/issues/new/choose). ### Credits Thanks to Christian Pöschl and Fabian Brenner from usd AG for reporting this vulnerability.
Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Contao Contao | >=5.0.0<5.1.10 | |
| Contao Contao | >=4.10.0<4.13.28 | |
| Contao Contao | >=4.0.0<4.9.42 |
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Reference Links
- https://github.com/contao/contao/commit/5c9aff32cfc1f7dc452a045862ac2f86a6b9b4b4
- https://github.com/contao/contao/security/advisories/GHSA-4gpr-p634-922x
- https://github.com/contao/contao/commit/ccb64c777eb0f9c0e6490c9135d80e915d37cd32
- https://github.com/contao/contao/commit/c98585d36baa25fda69c062421e7e7eadc53c82b
- https://herolab.usd.de/security-advisories/usd-2023-0020/
- https://nvd.nist.gov/vuln/detail/CVE-2023-36806
- https://github.com/advisories/GHSA-4gpr-p634-922x (Advisory)
Frequently Asked Questions
What is the impact of CVE-2023-36806?
Authenticated users can inject malicious code in widgets with units, which is then executed both in the element preview (back end) and on the website (front end).
How can I patch CVE-2023-36806?
Update to Contao 4.9.42, 4.13.28, or 5.1.10.
Are there any workarounds for CVE-2023-36806?
Disable login for all untrusted back end users.
What is the severity of CVE-2023-36806?
The severity of CVE-2023-36806 is medium with a CVSS score of 6.6.
What is the CWE for CVE-2023-36806?
The CWE for CVE-2023-36806 is CWE-79.
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- alias/CVE-2023-36806
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- package-manager/composer