๐Ÿ” CVE Alert

CVE-2026-22683

HIGH 8.8

Windmill < 1.615.0 Operator Role Missing Authorization Checks RCE

CVSS Score
8.8
EPSS Score
0.3%
EPSS Percentile
51th

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.

CWE CWE-862
Vendor windmill labs
Product windmill ce (community edition)
Published Apr 7, 2026
Last Updated Apr 13, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Affected Versions

Windmill Labs / Windmill CE (Community Edition)
1.56.0 โ‰ค 1.614.0
Windmill Labs / Windmill EE (Enterprise Edition)
1.56.0 โ‰ค 1.614.0
Nextcloud / Flow
1.0.0 โ‰ค 1.3.1

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
chocapikk.com: https://chocapikk.com/posts/2026/windfall-nextcloud-flow-windmill-rce/ github.com: https://github.com/Chocapikk/Windfall github.com: https://github.com/windmill-labs/windmill/releases/tag/v1.615.0 github.com: https://github.com/windmill-labs/windmill/commit/c621a74804f4f6e8318819c01e3a23a17698588b windmill.dev: https://www.windmill.dev/ apps.nextcloud.com: https://apps.nextcloud.com/apps/flow/releases

Credits

Valentin Lobstein (Chocapikk)