Paper/Archive/CVE-2025-59434

CVE-2025-59434

FlowiseAI Flowise — Critical Multi-Tenant Variable Disclosure in Flowise Cloud via Custom JavaScript Function

CVSS 9.6 (CNA)9.6 / 10 × 3028.8 Not in CISA KEV+300.0 EPSS percentile 90.6.906 × 2018.1 Exploit: SSVC poc+1010.0 SSVC exploitation: poc+100.0

Description · from the CVE record

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

ProductAffectedFixed inSource

Flowise< cloud-hosted (as of Aug 2025)–CNA

Scores by source

GitHub_M (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: partial

References

refgithub.com/FlowiseAI/Flowise/security/advisories/GHSA-435c-mg9p-fv22