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CVE-2026-56271

Flowise - Weak Default JWT Secrets in Authentication Middleware

Published: Jul 12, 2026Updated: Jul 14, 2026 Sources: CVE List NVDCWE-321
9.8CRITICAL
NVD MITRE
EPSS Score
0.4%
Top 69.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-321

Affected Products

flowiseai
oss-projectaka flowise-components, flowise, embed
flowiseOn-premWeb App
AI / ML / ai-agent-tooling
Flowise
oss-projectaka flowise-ai
FlowiseSaaS
AI / ML / ai-agent-tooling

Exploitability

Official Patch Available
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References

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

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