Authenticated Vulnerability in Flowise Cloud Affects Drag & Drop User Interface
CVE-2025-59434

9.6CRITICAL

Key Information:

Vendor

Flowiseai

Status
Flowise
Vendor
CVE Published:
22 September 2025

What is CVE-2025-59434?

Flowise Cloud, a customizable drag-and-drop interface for building large language model flows, experienced a security issue allowing users on the free tier to access sensitive environment variables of other tenants. This vulnerability, linked to the Custom JavaScript Function node, could expose critical secrets such as OpenAI API keys, AWS credentials, Supabase tokens, and Google Cloud secrets, leading to severe data exposure risks across tenants. This issue has been resolved in the August 2025 release of Flowise Cloud.

Affected Version(s)

Flowise < cloud-hosted (as of Aug 2025)

References

https://github.com/FlowiseAI/Flowise/security/advisories/...
x_refsource_CONFIRM

CVSS V3.1

Score:
9.6
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2025-59434 : Authenticated Vulnerability in Flowise Cloud Affects Drag & Drop User Interface