Privilege escalation (PR)/remote code execution from account through Menu.UIExtensionSheet

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

8.8 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

• CVE-2023-37909: 1.89% estimated exploitation activity in the next 30 days; percentile 79.54 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact Any user who can edit their own user profile can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. This can be reproduced with the following steps: 1. As an advanced user, use the object editor to add an object of type UIExtensionClass to your user profile. Set the value "Extension Point ID" to {{/html}}{{async async=false cache=false}}{{groovy}}println("Hello from Groovy!"){{/groovy}}{{/async}} 2. Open <xwiki-host/xwiki/bin/edit/XWiki/<username?sheet=Menu.UIExtensionSheet where <xwiki-host is the URL of your XWiki installation and <username is your user name. If the text Hello from Groovy!" selected="selected" is displayed in the output, the attack succeeded. Patches This has been patched in XWiki 14.10.8 and 15.3 RC1 by adding proper escaping. Workarounds The patch can be manually applied to the document Menu.UIExtensionSheet, only three lines need to be…

Published by the source

25 Oct 2023, 21:03 UTC

Last modified by the source

10 Nov 2023, 05:03 UTC

Source last checked

26 Oct 2026, 16:17 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-v2rr-xw95-wcjx

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# Patch Next advisory brief: CVE-2023-37909

Advisory: Privilege escalation (PR)/remote code execution from account through Menu.UIExtensionSheet
IDs: CVE-2023-37909, GHSA-v2rr-xw95-wcjx
Record: https://patchnext.com/advisories/cve-2023-37909 (revision 1, source checked 26 Oct 2026, 16:17 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: org.xwiki.platform:xwiki-platform-menu-ui 15.3-rc-1, 14.10.8; org.xwiki.platform:xwiki-platform-menu 14.10.8. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.xwiki.platform:xwiki-platform-menu-ui: affected >= 5.1-rc-1, < 14.10.8; >= 15.0-rc-1, < 15.3-rc-1; fixed in 14.10.8, 15.3-rc-1
- Maven org.xwiki.platform:xwiki-platform-menu: affected >= 5.1-rc-1, < 14.10.8; fixed in 14.10.8

## Suggested inspection (read-only)
- Maven org.xwiki.platform:xwiki-platform-menu-ui: check the installed version with your package manager.
- Maven org.xwiki.platform:xwiki-platform-menu: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.xwiki.platform:xwiki-platform-menu-ui, org.xwiki.platform:xwiki-platform-menu.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-v2rr-xw95-wcjx (GitHub-reviewed advisory GHSA-v2rr-xw95-wcjx lists affected ranges: Maven org.xwiki.platform:xwiki-platform-menu >=5.1-rc-1 =5.1-rc-1 =15.0-rc-1 <15.3-rc-1)

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