Summary
The WikiManager REST API allows any user to create wikis
Workarounds
There's no workaround other than upgrading the dependency.
References
- JIRA ticket: https://jira.xwiki.org/browse/XWIKI-22490
- Commit of the fix: https://github.com/xwiki/xwiki-platform/commit/82aa670106c7f5e6238ca6ed59a52d1800e05b99
For more information
If you have any questions or comments about this advisory:
- Open an issue in Jira XWiki.org
- Email us at Security Mailing List
Attribution
You can specify here who reported the issue.
Impact
Any user can exploit the WikiManager REST API to create a new wiki, where the user could become an administrator and so performs other attacks on the farm.
Note that this REST API is not bundled in XWiki Standard by default: it needs to be installed manually through the extension manager.
The application does not perform an authorization check before performing a sensitive operation. Typical impact: unauthorized access to restricted functionality or data.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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The problem has been patched in versions 15.10.15, 16.4.6 and 16.10.0 of the REST module.
Frequently Asked Questions
- What is CVE-2025-29926? CVE-2025-29926 is a high-severity missing authorization vulnerability in org.xwiki.platform:xwiki-platform-wiki-rest-default (maven), affecting versions >= 5.4-rc-1, < 15.10.15. It is fixed in 15.10.15, 16.4.6, 16.10.0. The application does not perform an authorization check before performing a sensitive operation.
- Which versions of org.xwiki.platform:xwiki-platform-wiki-rest-default are affected by CVE-2025-29926? org.xwiki.platform:xwiki-platform-wiki-rest-default (maven) versions >= 5.4-rc-1, < 15.10.15 is affected.
- Is there a fix for CVE-2025-29926? Yes. CVE-2025-29926 is fixed in 15.10.15, 16.4.6, 16.10.0. Upgrade to this version or later.
- Is CVE-2025-29926 exploitable, and should I be worried? Whether CVE-2025-29926 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2025-29926 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2025-29926?
- Upgrade
org.xwiki.platform:xwiki-platform-wiki-rest-defaultto 15.10.15 or later - Upgrade
org.xwiki.platform:xwiki-platform-wiki-rest-defaultto 16.4.6 or later - Upgrade
org.xwiki.platform:xwiki-platform-wiki-rest-defaultto 16.10.0 or later
- Upgrade