Vulnerability Description
Windmill versions 1.56.0 through 1.614.0 contain a missing authorization vulnerability that allows users with the Operator role to perform prohibited entity creation and modification actions via the backend API. Although Operators are documented and priced as unable to create or modify entities, the API does not enforce the Operator restriction on workspace endpoints, allowing an Operator to create and update scripts, flows, apps, and raw_apps. Since Operators can also execute scripts via the jobs API, this allows direct privilege escalation to remote code execution within the Windmill deployment. This vulnerability has existed since the introduction of the Operator role in version 1.56.0.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud | Flow | >= 1.0.0, <= 1.2.2 |
| Windmill | Windmill | >= 1.56.0, <= 1.614.0 |
Related Weaknesses (CWE)
References
- https://apps.nextcloud.com/apps/flow/releasesRelease Notes
- https://chocapikk.com/posts/2026/windfall-nextcloud-flow-windmill-rce/Vendor Advisory
- https://github.com/Chocapikk/WindfallProduct
- https://github.com/windmill-labs/windmill/commit/c621a74804f4f6e8318819c01e3a23aPatch
- https://github.com/windmill-labs/windmill/releases/tag/v1.615.0Release Notes
- https://www.windmill.dev/Product
FAQ
What is CVE-2026-22683?
CVE-2026-22683 is a vulnerability with a CVSS score of 8.8 (HIGH). Windmill versions 1.56.0 through 1.614.0 contain a missing authorization vulnerability that allows users with the Operator role to perform prohibited entity creation and modification actions via the b...
How severe is CVE-2026-22683?
CVE-2026-22683 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-22683?
Check the references section above for vendor advisories and patch information. Affected products include: Nextcloud Flow, Windmill Windmill.