PT-2025-39070 · Flowise · Flowise

Published 2025-09-22 · Updated 2025-09-23 · CVE-2025-59434

Positive Technologies (AI Summary)

CVSS v3.1

9.6

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Flowise versions prior to August 2025 Cloud-Hosted Flowise

Description Flowise is a drag & drop user interface used to build customized large language model flows. A vulnerability in Flowise Cloud, prior to the August 2025 release, allows authenticated users on the free tier to access sensitive environment variables from other tenants. This access is achieved through the Custom JavaScript Function node and exposes secrets such as OpenAI API keys, AWS credentials, Supabase tokens, and Google Cloud secrets, resulting in cross-tenant data exposure. The Custom JavaScript Function node is the point of access for this issue.

Recommendations Update to August 2025 Cloud-Hosted Flowise to address the issue.

Exploit

Fix

Improper Access Control

Information Disclosure

Weakness Enumeration

CWE-284

CWE-200

Related Identifiers

BDU:2026-03237

CVE-2025-59434

GHSA-435C-MG9P-FV22

Affected Products

Flowise

References · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59434.json · Exploit
• https://bdu.fstec.ru/vul/2026-03237 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-59434 · Security Note
• https://osv.dev/vulnerability/CVE-2025-59434 · Vendor Advisory
• https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.0.5 · Note
• https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-435c-mg9p-fv22 · Note
• https://t.me/CVEtracker/33088 · Telegram Post
• https://twitter.com/CveFindCom/status/1970219029081030724 · Twitter Post
• https://twitter.com/CVEnew/status/1970255641253150854 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1970291032995643436 · Twitter Post
• https://twitter.com/offseq/status/1970299921417810146 · Twitter Post