CVE-2026-22683

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 v4.0

8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

2.61% chance of exploitation in the next 30 days, 84th percentile

Nuclei

high · CWE-862

Published

2026-04-07

Updated

2026-07-14

Proof-of-concept exploits (2)

• https://chocapikk.com/posts/2026/windfall-nextcloud-flow-windmill-rce/
• Chocapikk/Windfall18★ · 2026-04-07

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-22683.yaml

References

• CVE Record
• NVD entry

Related

• CVE-2026-22679
• CVE-2026-22686
• CVE-2026-22666
• CVE-2026-22687
• CVE-2026-2262
• CVE-2026-22688