CVE-2025-49587 XWiki does not require right warnings for notification displayer objects

What is CVE-2025-49587?

CVE-2025-49587 is a medium-severity cross-site scripting vulnerability in Xwiki Xwiki, published on 13 Jun 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

XWiki is an open-source wiki software platform. When a user without script right creates a document with an XWiki.Notifications.Code.NotificationDisplayerClass object, and later an admin edits and saves that document, the possibly malicious content of that object is output as raw HTML, allowing XSS attacks. While the notification displayer executes Velocity, the existing generic analyzer already warns admins before editing Velocity code. Note that warnings before editing documents with dangerous properties have only been introduced in XWiki 15.9, before that version, this was a known issue and the advice was simply to be careful. This vulnerability has been patched in XWiki 15.10.16, 16.4.7, and 16.10.2 by adding a required rights analyzer that warns the admin before editing about the possibly malicious code.

Weakness: CWE-357

Which versions are affected by CVE-2025-49587?

6 open source packages ship an affected version, including org.xwiki.platform:xwiki-platform-notifications-notifiers-default. It affects 1 product.

Products include Xwiki Xwiki.

How do I fix CVE-2025-49587?

Upgrade org.xwiki.platform:xwiki-platform-notifications-notifiers-default to a fixed version for your release line: 15.10.16, 16.4.7 or 16.10.2.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-49587 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-49587 exists.

Other vulnerabilities in Xwiki Xwiki

• CVE-2025-24893 XWiki Platform Eval Injection Exploited Critical 9.8
• CVE-2025-53836 XWiki Rendering is vulnerable to RCE attacks when processing nested macros Critical 10.0
• CVE-2024-55662 XWiki allows remote code execution through the extension sheet Critical 10.0
• CVE-2024-55877 XWiki allows remote code execution from account through macro descriptions and XWiki.XWikiSyntaxMacrosList Critical 10.0
• CVE-2024-37901 XWiki Platform vulnerable to remote code execution from account via SearchSuggestConfigSheet Critical 10.0

All Xwiki Xwiki vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-j7p2-87q3-44w7.