CVE-2026-33881

Windmill is an open-source developer platform for internal code: APIs, background jobs, workflows and UIs. Workspace environment variable values are interpolated into JavaScript string literals without escaping single quotes in the NativeTS executor. A workspace admin who sets a custom environment variable with a value containing `'` can inject arbitrary JavaScript that executes inside every NativeTS script in that workspace. This is a code injection bug in `worker.rs`, not related to the sandbox/NSJAIL topic. Version 1.664.0 patches the issue.

CVSS v3 7.2 HIGH

7.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/windmill-labs/windmill/security/advisories/GHSA-8q8j-mm3g-5c2q	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:windmill:windmill:*:*:*:*:*:*:*:*

History

08 Apr 2026, 14:39

Type	Values Removed	Values Added
First Time		Windmill Windmill windmill
References	~~() https://github.com/windmill-labs/windmill/security/advisories/GHSA-8q8j-mm3g-5c2q -~~	() https://github.com/windmill-labs/windmill/security/advisories/GHSA-8q8j-mm3g-5c2q - Exploit, Mitigation, Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.2
CPE		cpe:2.3:a:windmill:windmill::::::::

27 Mar 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-27 21:17

Updated : 2026-04-08 14:39

NVD link : CVE-2026-33881

Mitre link : CVE-2026-33881

CVE.ORG link : CVE-2026-33881

JSON object : View

Products Affected

windmill

windmill

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

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