CVE-2026-22683

HIGH EPSS 47.7%
Published Apr 7, 20262mo ago · Modified Jun 17, 20261w ago
8.7 CVSS 4.0
High
Find Similar
Published Apr 7, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
8.7
Exploitability
—
Impact
—
Vector string
CVSS: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
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
47.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-862 Missing Authorization Authorization

Affected Products 2

VendorProductVersionRange
nextcloudflow*≥1.0.0  –  ≤1.2.2
windmillwindmill*≥1.56.0  –  ≤1.614.0

References 6

  • apps.nextcloud.com https://apps.nextcloud.com/apps/flow/releases
    Release Notes
  • chocapikk.com https://chocapikk.com/posts/2026/windfall-nextcloud-flow-windmill-rce/
    Vendor Advisory
  • github.com https://github.com/Chocapikk/Windfall
    Product
  • github.com https://github.com/windmill-labs/windmill/commit/c621a74804f4f6e8318819c01e3a23a17698588b
    Patch
  • github.com https://github.com/windmill-labs/windmill/releases/tag/v1.615.0
    Release Notes
  • windmill.dev https://www.windmill.dev/
    Product

Remediation

  • github.com https://github.com/windmill-labs/windmill/commit/c621a74804f4f6e8318819c01e3a23a17698588b
    Patch