GHSA-fwwj-wg89-7h4c XWiki Platform vulnerable to cross-site scripting in target parameter via share page by email

• Maven org.xwiki.platform:xwiki-platform-sharepage-api: >= 2.6-rc-2, < 14.4.8 → fixed in 14.4.8 • Maven org.xwiki.platform:xwiki-platform-sharepage-api: >= 14.5, < 14.10.4 → fixed in 14.10.4

Impact Users are able to forge an URL with a payload allowing to inject Javascript in the page (XSS). For instance, the following URL execute an `alter` on the browser: `/xwiki/bin/view/Main/?viewer=share&send=1&target=&target=%3Cimg+src+onerror%3Dalert%28document.domain%29%3E+%3Cimg+src+onerror%3Dalert%28document.domain%29%3E+%3Crenniepak%40intigriti.me%3E&includeDocument=inline&message=I+wanted+to+share+this+page+with+you.`, where `` is the URL of your XWiki installation. See https://jira.xwiki.org/browse/XWIKI-20370 for me details. Patches The vulnerability has been patched in XWiki 15.0-rc-1, 14.10.4, and 14.4.8. Workarounds The fix is only impacting Velocity templates and page contents, so applying this patch is enough to fix the issue. References https://jira.xwiki.org/browse/XWIKI-20370 For more information If you have any questions or comments about this advisory: • Open an issue in Jira XWiki.org • Email us at Security Mailing List Attribution This vulnerability has been reported on Intigriti by René de Sain @renniepak.