CVE-2025-59434

CRITICAL

Flowise <August 2025 - Cross-Tenant Data Exposure

Title source: llm
STIX 2.1

Description

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.

References (1)

Core 1
Core References

Scores

CVSS v3 9.6
EPSS 0.0315
EPSS Percentile 86.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-200 CWE-284
Status published
Products (1)
FlowiseAI/Flowise < cloud-hosted (as of Aug 2025)
Published Sep 22, 2025
Tracked Since Feb 18, 2026