CVE-2026-72539
Received Received - Intake

Information Disclosure in Windmill Labs Windmill

Publication date: 2026-08-11

Last updated on: 2026-08-11

Assigner: 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c

Description
An information disclosure vulnerability in Windmill Labs Windmill through 1.783.0 allows any authenticated workspace member to read legacy ownerless draft scripts that contain plaintext resource credentials. Drafts with a null owner email bypass ACL enforcement and are returned to any workspace member who queries the drafts endpoint. Sensitive credentials stored in these drafts are exposed across ACL boundaries.

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Meta Information

Published
2026-08-11
Last Modified
2026-08-11
Generated
2026-08-11
AI Q&A
2026-08-11
EPSS Evaluated
N/A
NVD
CVE-2026-72539
EUVD
EUVD-2026-56009

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
windmill_labs windmill 1.783.0

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-200 The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

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Executive Summary

This vulnerability allows any authenticated workspace member in Windmill Labs Windmill (versions up to 1.783.0) to read legacy ownerless draft scripts containing plaintext resource credentials. Drafts with a null owner email bypass access control lists (ACLs), exposing sensitive credentials across workspace boundaries.

Detection Guidance

Check Windmill logs for unauthorized access to drafts endpoints. Review API calls to /api/v1/drafts or similar endpoints for unexpected queries. Inspect workspace member permissions for unintended access to legacy drafts.

Impact Analysis

An attacker with workspace access could steal plaintext credentials stored in draft scripts, potentially leading to unauthorized access to other systems, data breaches, or lateral movement within the infrastructure. This could compromise sensitive resources like databases, APIs, or cloud services.

Compliance Impact

This vulnerability likely violates compliance requirements for data protection (e.g., GDPR, HIPAA) due to unauthorized exposure of sensitive credentials and potential data breaches. Organizations using Windmill may face legal penalties, loss of certification, or reputational damage.

Mitigation Strategies

Upgrade Windmill to the latest version beyond 1.783.0. Review and remove legacy ownerless drafts containing sensitive credentials. Audit workspace member permissions to ensure least privilege access.

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