What is CVE-2026-56271?

CVE-2026-56271 is a critical-severity vulnerability in Flowise, classified under Use of Hard-coded Cryptographic Key. CVSS score: 9.8/10. Published 2026-07-12.

How severe is CVE-2026-56271?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Flowise

CVE-2026-56271

Flowise before 3.1.0 (affected versions 3.0.13 and earlier) uses weak hardcoded default JWT secrets ('auth_token', 'refresh_token') and default audience and issuer values ('AUDIENCE', 'ISSUER') in the enterprise passport authentication mid…

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Flowise — versions 0, 3.1.0

Weakness classification (CWE)

CWE-321 — Use of Hard-coded Cryptographic Key

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-56271?: CVE-2026-56271 is a critical-severity vulnerability in Flowise, classified under Use of Hard-coded Cryptographic Key. CVSS score: 9.8/10. Published 2026-07-12.
How severe is CVE-2026-56271?: Critical severity. CVSS v3 base score is 9.8 out of 10.