Cross-site Scripting in wiki manager join wiki page

Impact

We found a possible XSS vector in the WikiManager.JoinWiki wiki page related to the "requestJoin" 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 WikiManager.JoinWiki (with wiki editor) and change the line

<input type='hidden' name='requestJoin' value="$!request.requestJoin"/>

into

<input type='hidden' name='requestJoin' value="$escapetool.xml($!request.requestJoin)">

References

• https://jira.xwiki.org/browse/XWIKI-19292
• https://github.com/xwiki/xwiki-platform/commit/27f839133d41877e538d35fa88274b50a1c00b9b

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