Vulnerability · Published Sep 22, 2025 · Assigned by GitHub_M
CVE-2025-59434Critical Multi-Tenant Variable Disclosure in Flowise Cloud via Custom JavaScript Function
Critical 9.6
In plain English
A critical-severity information exposure in Flowise from FlowiseAI. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 4.0% (higher than 91% of all known vulnerabilities).
Official 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.
Affected products (as reported)
Weakness: CWE-200, CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
References
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-435c-mg9p-fv22 x_refsource_CONFIRM