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archive/Patch now/AIR-2025-0025
closedclosed 22 Sep 2025Patch now2 Disclosed vulnerabilityAI

CVE-2025-59434: Cross-tenant environment variable exposure in Flowise Cloud

Flowise

An authentication vulnerability in Cloud-Hosted Flowise permitted free-tier users to access sensitive environment variables across tenants via custom JavaScript functions. The issue exposed API keys and credentials, and was patched in August 2025.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
9.6
EPSS
0.04 · top 9% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
22 Sep 2025
last update
22 Sep 2025
CVE ids
CVE-2025-59434other records

Timeline · 1

  1. 22 Sep 2025CVE-2025-59434: Flowise is a drag & drop user interface to build a customized large language model flow.

Sources · 1

Advisories and databases

  1. 2025-09-22
    CVE-2025-59434: Flowise is a drag & drop user interface to build a customized large language model flow.
    NVD · nvd.nist.gov/vuln/detail/CVE-2025-59434

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerabilityData leak
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM02:2025 Sensitive Information DisclosureLLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
data-exposureflowise
dates
happened 22 Sep 2025 · first reported 22 Sep 2025
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 06:33Z · updated 2026-10-18 06:33Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2025-59434: Cross-tenant environment variable exposure in Flowise Cloud

https://gcdradar.vercel.app/incidents/cve-2025-59434-cross-tenant-environment-variable-exposure-in · AIR-2025-0025 · closed 2025-09-22

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2025-09-22
- AI role: Attack on AI
- Products: Flowise
- CVE ids: CVE-2025-59434
- CVSS: 9.6

## Summary

An authentication vulnerability in Cloud-Hosted Flowise permitted free-tier users to access sensitive environment variables across tenants via custom JavaScript functions. The issue exposed API keys and credentials, and was patched in August 2025.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2025-09-22: CVE-2025-59434: Flowise is a drag & drop user interface to build a customized large language model flow. (https://nvd.nist.gov/vuln/detail/CVE-2025-59434)

## Sources

- 2025-09-22 NVD: CVE-2025-59434: Flowise is a drag & drop user interface to build a customized large language model flow. https://nvd.nist.gov/vuln/detail/CVE-2025-59434

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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