GHSA-mgjw-2wrp-r535

### Impact
It's possible for an unprivileged user to perform a remote code execution by injecting a groovy script in her own profile and by calling the Reset password feature since the feature is performing a save of the user profile with programming rights in the impacted versions of XWiki.

### Patches
The problem has been patched in XWiki 13.1RC1 with a complete refactoring of the Reset password feature.

### Workarounds
There's different possible workarounds, all consisting in modifying the XWiki/ResetPassword page.
- the Reset password feature can be entirely disabled by deleting the XWiki/ResetPassword page
- the script in XWiki/ResetPassword can also be modified or removed: an administrator can replace it with a simple email contact to ask an administrator to reset the password.

### References
https://jira.xwiki.org/browse/XWIKI-16661

### For more information
If you have any questions or comments about this advisory:
* Open an issue in [Jira](https://jira.xwiki.org)
* Email us at [Security mailing-list](mailto:[email protected])