GHSA-j9h5-vcgv-2jfm XWiki Platform vulnerable to RXSS via editor parameter - importinline template

• Maven org.xwiki.platform:xwiki-platform-distribution-war: >= 2.2-milestone-1, < 14.4.8 → fixed in 14.4.8 • Maven org.xwiki.platform:xwiki-platform-distribution-war: >= 14.5, < 14.10.4 → fixed in 14.10.4

Impact It's possible to execute javascript with the right of any user by leading him to a special URL on the wiki targeting a page which contains an attachment. To reproduce: • add an attachment to a page (for example, your user profile) • add `?xpage=importinline&editor=%22%3E%3Cimg%20src%20onerror=alert(document.domain)%3E` to the page view URL as in `https://myhost/xwiki/bin/view/XWiki/MyUser?xpage=importinline&editor=%22%3E%3Cimg%20src%20onerror=alert(document.domain)%3E` Patches This has been patched in XWiki 15.0-rc-1, 14.10.4 and 14.4.8. Workarounds The easiest is to edit file `/templates/importinline.vm` and apply the modification described on https://github.com/xwiki/xwiki-platform/commit/28905f7f518cc6f21ea61fe37e9e1ed97ef36f01 References https://jira.xwiki.org/browse/XWIKI-20340 https://app.intigriti.com/company/submissions/e95a7ad5-7029-4627-abf0-3e3e3ea0b4ce/XWIKI-E93DFEYK Attribution This vulnerability has been reported on Intigriti by René de Sain @renniepak.