critical9.0Public exploit code

CVE-2024-41947

XWiki Platform vulnerable to Cross-Site Scripting (XSS) through conflict resolution

Public exploit code

Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.

OpenCMS 17.0 - Stored Cross Site Scripting (XSS)2025-04-15 · webapps · php

Impact

### Impact By creating a conflict when another user with more rights is currently editing a page, it is possible to execute JavaScript snippets on the side of the other user, which compromises the confidentiality, integrity and availability of the whole XWiki installation. To reproduce on a XWiki instance, a user with admin rights needs to edit a document without saving right away. Then, as another user without any other right than edit on the specific document, change the whole content to `<script>alert('XSS')</script>`. When the admin user then saves the document, a conflict popup appears. If they select "Fix each conflict individually" and see an alert displaying "XSS", then the instance is vulnerable. ### Patches This has been patched in XWiki 15.10.8 and 16.3.0RC1. ### Workarounds We're not aware of any workaround except upgrading. ### References * https://jira.xwiki.org/browse/XWIKI-21626 * https://github.com/xwiki/xwiki-platform/commit/821d43ec45e67d45a6735a0717b9b77fffc1cd9f ### For more information If you have any questions or comments about this advisory: * Open an issue in [Jira XWiki.org](https://jira.xwiki.org/) * Email us at [Security Mailing List](mailto:security@xwiki.org)

Affected packages

Ecosystem	Package	Affected	Fixed in
maven	`org.xwiki.platform:xwiki-platform-web-templates`	>= 11.8-rc-1, < 15.10.8	15.10.8

Affected products

Vendor	Product	Affected versions
Xwiki	Xwiki	from 11.8 before 15.10.8 from 16.0 before 16.3.0

Weakness classification

CWE-80 CWE-79