CVE-2021-32621 Script injection without script or programming rights through Gadget titles

What is CVE-2021-32621?

CVE-2021-32621 is a high-severity code injection vulnerability in Xwiki Xwiki, published on 28 May 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In versions prior to 12.6.7 and 12.10.3, a user without Script or Programming right is able to execute script requiring privileges by editing gadget titles in the dashboard. The issue has been patched in XWiki 12.6.7, 12.10.3 and 13.0RC1.

Weakness: CWE-94

Which versions are affected by CVE-2021-32621?

4 open source packages ship an affected version, including org.xwiki.commons:xwiki-commons-core. It affects 1 product.

Products include Xwiki Xwiki.

How do I fix CVE-2021-32621?

Upgrade org.xwiki.commons:xwiki-commons-core to a fixed version for your release line: 12.6.7 or 12.10.3.

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

Is CVE-2021-32621 being exploited?

There is no known exploitation of CVE-2021-32621 in the wild and no public exploit code.

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-h353-hc43-95vc.