CVE-2023-29209 org.xwiki.platform:xwiki-platform-legacy-notification-activitymacro Eval Injection vulnerability

What is CVE-2023-29209?

CVE-2023-29209 is a critical code injection vulnerability in Xwiki Xwiki, published on 15 Apr 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

XWiki Commons are technical libraries common to several other top level XWiki projects. Any user with view rights on commonly accessible documents including the legacy notification activity macro can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping of the macro parameters of the legacy notification activity macro. This macro is installed by default in XWiki. The vulnerability can be exploited via every wiki page that is editable including the user's profile, but also with just view rights using the HTMLConverter that is part of the CKEditor integration which is bundled with XWiki. The vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10.

Weakness: CWE-94, CWE-95

Which versions are affected by CVE-2023-29209?

6 open source packages ship an affected version, including org.xwiki.platform:xwiki-platform-legacy-notification-activitymacro. It affects 1 product.

Products include Xwiki Xwiki.

How do I fix CVE-2023-29209?

Upgrade org.xwiki.platform:xwiki-platform-legacy-notification-activitymacro to a fixed version for your release line: 13.10.11, 14.4.7 or 14.10.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2023-29209 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-29209 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-9pc2-x9qf-7j2q.