CVE-2026-22683Windmill < 1.615.0 Operator Role Missing Authorization Checks RCE
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.
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| nextcloud | flow | 1.0.0 – ≤ 1.2.2 | |
| windmill | windmill | 1.56.0 – ≤ 1.614.0 | |
| Windmill Labs | Windmill CE (Community Edition) | 1.56.0 – ≤ 1.614.0, fixed 1.615.0 | |
| Windmill Labs | Windmill EE (Enterprise Edition) | 1.56.0 – ≤ 1.614.0, fixed 1.615.0 |
References and patches
- https://chocapikk.com/posts/2026/windfall-nextcloud-flow-windmill-rce/ technical-descriptionexploitVendor Advisory
- https://github.com/Chocapikk/Windfall exploitProduct
- Windmill 1.615.0 Release Notes release-notesRelease Notes
- https://github.com/windmill-labs/windmill/commit/c621a74804f4f6e8318819c01e3a23a17698588b patchPatch
- https://www.windmill.dev/ productProduct
- https://apps.nextcloud.com/apps/flow/releases release-notesRelease Notes
CPE matches (NVD) (2)
cpe:2.3:a:nextcloud:flow:*:*:*:*:*:*:*:*≥ 1.0.0 ≤ 1.2.2cpe:2.3:a:windmill:windmill:*:*:*:*:*:*:*:*≥ 1.56.0 ≤ 1.614.0