Cross-site Scripting in the Flamingo theme manager

Impact

We found a possible XSS vector in the FlamingoThemesCode.WebHomeSheet wiki page related to the “newThemeName” form field.

Patches

The issue is patched in versions 12.10.11, 14.0-rc-1, 13.4.7, 13.10.3.

Workarounds

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)" />

References

• https://jira.xwiki.org/browse/XWIKI-19294
• https://github.com/xwiki/xwiki-platform/commit/bd935320bee3c27cf7548351b1d0f935f116d437

For more information

If you have any questions or comments about this advisory:

• Open an issue in Jira XWiki
• Email us at security mailing list