What is CVE-2026-33881?

CVE-2026-33881 is a high-severity vulnerability in Windmill, classified under Code Injection. CVSS score: 7.2/10. Published 2026-03-27.

How severe is CVE-2026-33881?

High severity. CVSS v3 base score is 7.2 out of 10.

RCE in Windmill

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 NativeT…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.004 (30.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Windmill
Windmill-labs Windmill — versions < 1.664.0

Weakness classification (CWE)

CWE-94 — Code Injection

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-33881?: CVE-2026-33881 is a high-severity vulnerability in Windmill, classified under Code Injection. CVSS score: 7.2/10. Published 2026-03-27.
How severe is CVE-2026-33881?: High severity. CVSS v3 base score is 7.2 out of 10.