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
References
- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-vmhh-xh3g-j992
- https://nvd.nist.gov/vuln/detail/CVE-2022-29251
- https://github.com/xwiki/xwiki-platform/commit/bd935320bee3c27cf7548351b1d0f935f116d437
- https://jira.xwiki.org/browse/XWIKI-19294
- https://github.com/advisories/GHSA-vmhh-xh3g-j992