XWiki Platform vulnerable to Cross-site Scripting in the deleted attachments list
Date: 2022-09
Affected: maven/org.xwiki.platform:xwiki-platform-index-ui, maven/org.xwiki.platform:xwiki-platform-index-ui
Attack vector: xss
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2022-36096
CWE: CWE-79
CWE-80
CVSS: 8.9 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L)

### Impact It's possible to store a JavaScript which will be executed by anyone viewing the deleted attachments index with an attachment containing javascript in its name. For example, attachment a file with name `><img src=1 onerror=alert(1)>.jpg` will execute the alert. ### Patches This issue has been patched in XWiki 13.10.6 and 14.3. ### Workarounds It is possible to modify fix the vulnerability by editing the wiki page `XWiki.DeletedAttachments` with the object editor, open the `JavaScriptExtension` object and apply on the content the changes that can be found on the commit https://github.com/xwiki/xwiki-platform/commit/6705b0cd0289d1c90ed354bd4ecc1508c4b25745. ### References * https://jira.xwiki.org/browse/XWIKI-19613 ### 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)


Mitigations:

Architectural layers (MAESTRO):