GHSA-rmxw-c48h-2vf5

### Impact

In XWiki Platform, it's possible for a user to write a script in which any velocity content is executed with the right of any other document content author.

To reproduce:

As a user with script but not programming right, create a document with the following content:

```
{{velocity}}
#set($main = $xwiki.getDocument('AppWithinMinutes.DynamicMessageTool'))
$main.setTitle('$doc.getDocument().getContentAuthor()')
$main.getPlainTitle()
{{/velocity}}
```

Since this API require programming right and the user does not have it, the expected result is `$doc.document.authors.contentAuthor` (not executed script), unfortunately with the security vulnerability we get `XWiki.superadmin` which shows that the title was executed with the right of the unmodified document.

### Patches

This has been patched in XWiki 14.10.7 and 15.2-RC-1.

### Workarounds

There are no known workarounds for it.

### References

* https://jira.xwiki.org/browse/XWIKI-20624
* https://github.com/xwiki/xwiki-platform/commit/11a9170dfe63e59f4066db67f84dbfce4ed619c6
* https://jira.xwiki.org/browse/XWIKI-20625
* https://github.com/xwiki/xwiki-platform/commit/41d7dca2d30084966ca6a7ee537f39ee8354a7e3

### For more information

If you have any questions or comments about this advisory:
* Open an issue in [Jira XWiki.org](https://jira.xwiki.org/)
* Email us at [Security Mailing List](mailto:[email protected])