Headline
GHSA-4gpr-p634-922x: Cross site scripting via input unit widget
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.
Credits
Thanks to Maximilian Seilmaier from usd AG for reporting this vulnerability.
- GitHub Advisory Database
- GitHub Reviewed
- CVE-2023-36806
Cross site scripting via input unit widget
Moderate severity GitHub Reviewed Published Jul 25, 2023 in contao/contao • Updated Jul 25, 2023
Package
composer contao/core-bundle (Composer)
Affected versions
>= 4.0.0, < 4.9.42
>= 4.10.0, < 4.13.28
>= 5.0.0, < 5.1.10
Patched versions
4.9.42
4.13.28
5.1.10
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.
Credits
Thanks to Maximilian Seilmaier from usd AG for reporting this vulnerability.
References
- GHSA-4gpr-p634-922x
Published to the GitHub Advisory Database
Jul 25, 2023
Last updated
Jul 25, 2023
Related news
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.