CVE-2025-59434
9.6
CRITICAL · CVSS 3.1 · EPSS 3.4% (pctl 89)
In your normal cycle
Critical by CVSS (9.6), but no sign of active exploitation.
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.
Scoring
| CVSS | 9.6 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N |
| EPSS | 3.4% — more likely to be exploited than 89% of all CVEs |
| Weakness | CWE-200 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2025-09-22 |
| Last modified | 2026-09-30 |
→ the Explorer · watch your stack · NVD