We found a possible XSS vector in the FlamingoThemesCode.WebHomeSheet wiki page related to the "newThemeName" form field.
The issue is patched in versions 12.10.11, 14.0-rc-1, 13.4.7, 13.10.3.
The easiest workaround is to edit the wiki page FlamingoThemesCode.WebHomeSheet (with wiki editor) and change the line
<input type="hidden" name="newThemeName" id="newThemeName" value="$request.newThemeName" />
into
<input type="hidden" name="newThemeName" id="newThemeName" value="$escapetool.xml($request.newThemeName)" />
If you have any questions or comments about this advisory:
{
"cwe_ids": [
"CWE-116",
"CWE-79",
"CWE-80"
],
"github_reviewed": true,
"github_reviewed_at": "2022-05-25T22:40:57Z",
"nvd_published_at": "2022-05-25T21:15:00Z",
"severity": "HIGH"
}