CVE-2023-27479

org.xwiki.platform:xwiki-platform-panels-ui vulnerable to Eval Injection

Workarounds

The issue can be fixed by editing the PanelsCode.ApplicationsPanelConfigurationSheet wiki page and making the same modifications as shown in the patch for this issue.

References

• https://github.com/xwiki/xwiki-platform/commit/6de5442f3c91c3634a66c7b458d5b142e1c2a2dc
• https://jira.xwiki.org/browse/XWIKI-20294

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

Any user with view rights 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 UIX parameters

A proof of concept exploit is to log in, add an XWiki.UIExtensionClass xobject to the user profile page, with an Extension Parameters content of:

order=100
label={{/html}} {{async async="true" cached="false" context="doc.reference"}}{{groovy}}println("Hello " + "from groovy!"){{/groovy}}{{/async}}
icon=icon:pencil
target=XWiki.username

Then, navigating to PanelsCode.ApplicationsPanelConfigurationSheet (i.e., <xwiki-host>/xwiki/bin/view/PanelsCode/ApplicationsPanelConfigurationSheet where <xwiki-host> is the URL of your XWiki installation) should not execute the Groovy script. If it does, you will see Hello from groovy! displayed on the screen.

CVE-2023-27479 has a CVSS score of 9.9 (Critical). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (13.10.11, 14.4.7, 14.10-rc-1); upgrading removes the vulnerable code path.

Kodem intelligence

Already deployed Kodem?

The vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10-rc-1

1. What is CVE-2023-27479? CVE-2023-27479 is a critical-severity security vulnerability in org.xwiki.platform:xwiki-platform-panels-ui (maven), affecting versions >= 6.3-milestone-2, < 13.10.11. It is fixed in 13.10.11, 14.4.7, 14.10-rc-1.
2. How severe is CVE-2023-27479? CVE-2023-27479 has a CVSS score of 9.9 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of org.xwiki.platform:xwiki-platform-panels-ui are affected by CVE-2023-27479? org.xwiki.platform:xwiki-platform-panels-ui (maven) versions >= 6.3-milestone-2, < 13.10.11 is affected.
4. Is there a fix for CVE-2023-27479? Yes. CVE-2023-27479 is fixed in 13.10.11, 14.4.7, 14.10-rc-1. Upgrade to this version or later.
5. Is CVE-2023-27479 exploitable, and should I be worried? Whether CVE-2023-27479 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
6. What actually determines whether CVE-2023-27479 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.
7. How do I fix CVE-2023-27479?
   • Upgrade org.xwiki.platform:xwiki-platform-panels-ui to 13.10.11 or later
   • Upgrade org.xwiki.platform:xwiki-platform-panels-ui to 14.4.7 or later
   • Upgrade org.xwiki.platform:xwiki-platform-panels-ui to 14.10-rc-1 or later

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