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 middleware (packages/server/src/enterprise/middleware/passport/index.ts). When the corresponding environment variables (JWT_AUTH_TOKEN_SECRET, JWT_REFRESH_TOKEN_SECRET, JWT_AUDIENCE, JWT_ISSUER) are not set, the application silently falls back to these publicly known defaults, allowing an attacker to forge valid JWTs and impersonate any user, including administrators, resulting in authentication bypass.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-cc4f-hjpj-g9p8	Vendor Advisory
https://www.vulncheck.com/advisories/flowise-weak-default-jwt-secrets-in-authentication-middleware	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*

History

14 Jul 2026, 18:24

Type	Values Removed	Values Added
CPE		cpe:2.3:a:flowiseai:flowise::::::::
First Time		Flowiseai flowise Flowiseai
References	~~() https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-cc4f-hjpj-g9p8 -~~	() https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-cc4f-hjpj-g9p8 - Vendor Advisory
References	~~() https://www.vulncheck.com/advisories/flowise-weak-default-jwt-secrets-in-authentication-middleware -~~	() https://www.vulncheck.com/advisories/flowise-weak-default-jwt-secrets-in-authentication-middleware - Third Party Advisory

12 Jul 2026, 12:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-12 12:16

Updated : 2026-07-14 18:24

NVD link : CVE-2026-56271

Mitre link : CVE-2026-56271

CVE.ORG link : CVE-2026-56271

JSON object : View

Products Affected

flowiseai

flowise

CWE

CWE-321

Use of Hard-coded Cryptographic Key

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