CVE-2025-59434

CRITICAL EPSS 86.3%

Published Sep 22, 20259mo ago · Modified Jun 17, 20262w ago

9.6 CVSS 3.1

Critical

Published Sep 22, 2025 9mo ago

Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score

9.6

Exploitability

3.1

Impact

5.8

Vector string

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Attack Vector Network

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope Changed

Confidentiality High

Integrity High

Availability None

Threat Intelligence

EPSS Exploit Probability

86.3% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 2

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor Information Exposure

CWE-284

References 1

github.com https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-435c-mg9p-fv22

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.