CVE-2025-59434 — Critical Multi-Tenant Variable Disclosure in Flowise Cloud via Custom JavaScript Function

Description (CNA)

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to August 2025 Cloud-Hosted Flowise, an authenticated vulnerability in Flowise Cloud allows any user on the free tier to access sensitive environment variables from other tenants via the Custom JavaScript Function node. This includes secrets such as OpenAI API keys, AWS credentials, Supabase tokens, and Google Cloud secrets — resulting in a full cross-tenant data exposure. This issue has been patched in the August 2025 Cloud-Hosted Flowise.

Affected (CNA)

Vendor / product	Versions
FlowiseAI / Flowise	affected < cloud-hosted (as of Aug 2025)

CWE

CWE-200, CWE-284

References

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-435c-mg9p-fv22

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.