Code Injection Vulnerability in Windmill Developer Platform
CVE-2026-33881

7.3HIGH

Key Information:

Vendor

Windmill-labs

Status
Windmill
Vendor
CVE Published:
27 March 2026

What is CVE-2026-33881?

Windmill, an open-source developer platform, has a code injection vulnerability that arises from the interpolation of workspace environment variable values into JavaScript string literals within the NativeTS executor. An admin setting a custom environment variable containing a single quote can lead to the execution of arbitrary JavaScript within all NativeTS scripts in that workspace, allowing for potential exploitation. This issue is identified in the worker.rs component and has been addressed in version 1.664.0.

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Affected Version(s)

windmill < 1.664.0

References

https://github.com/windmill-labs/windmill/security/adviso...
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CVSS V4

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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