Cross-site Scripting potential in custom links, job buttons, and computed fields
### Impact
All users of Nautobot versions earlier than 1.6.6 or 2.0.5 are potentially affected.
Due to incorrect usage of Django's `mark_safe()` API when rendering certain types of user-authored content, including:
- custom links
- job buttons
- computed fields
it is possible that users with permission to create or edit these types of content could craft a malicious payload (such as JavaScript code) that would be executed when rendering pages containing this content.
### Patches
_Has the problem been patched? What versions should users upgrade to?_
We have fixed the incorrect uses of `mark_safe()` (generally by replacing them with appropriate use of `format_html()` instead) to prevent such malicious data from being executed.
Users on Nautobot 1.6.x LTM should upgrade to v1.6.6 and users on Nautobot 2.0.x should upgrade to v2.0.5.
### Workarounds
_Is there a way for users to fix or remediate the vulnerability without upgrading?_
Appropriate object permissions can and should be applied to restrict which users are permitted to create or edit the aforementioned types of user-authored content. Other than that, there is no direct fix available.
### References
_Are there any links users can visit to find out more?_
-
https://github.com/nautobot/nautobot/pull/4832
-
https://github.com/nautobot/nautobot/pull/4833
-
https://docs.djangoproject.com/en/3.2/ref/utils/#django.utils.html.format_html
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https://docs.djangoproject.com/en/3.2/ref/utils/#django.utils.safestring.mark_safe