TI-2025-37059 Aliases CVE-2025-59528 GHSA-3gcm-f6qx-ff7p

Flowise has Remote Code Execution vulnerability

CRITICAL 91CWE-94Published 2025-09-22 · Updated 2025-09-22

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-94.

Summary

Flowise is a drag & drop user interface to build a customized large language model flow. In version 3.0.5, Flowise is vulnerable to remote code execution. The CustomMCP node allows users to input configuration settings for connecting to an external MCP server. This node parses the user-provided mcpServerConfig string to build the MCP server configuration. However, during this process, it executes JavaScript code without any security validation. Specifically, inside the convertToValidJSONString function, user input is directly passed to the Function() constructor, which evaluates and executes the input as JavaScript code. Since this runs with full Node.js runtime privileges, it can access dangerous modules such as child_process and fs. This issue has been patched in version 3.0.6.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.86975 99th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed flowise (npm): 3.0.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
FlowiseAI	Flowise	= 3.0.5	—	No fix listed	CNA
—	flowise (npm)	3.0.5 to before 3.0.6	3.0.6	Patch available	GHSA-3gcm-f6qx-ff7p

Flowise VendorFlowiseAI Affected = 3.0.5 Fixed in — No fix listed CNA
flowise (npm) Vendor— Affected 3.0.5 to before 3.0.6 Fixed in 3.0.6 Patch available GHSA-3gcm-f6qx-ff7p

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:flowiseai:flowise:3.0.5:::::::*	3.0.5	Vulnerable	FlowiseAI

cpe:2.3:a:flowiseai:flowise:3.0.5:*:*:*:*:*:*:* Versions 3.0.5 Vulnerable ·FlowiseAI

Remediation

Fix · GHSA-3gcm-f6qx-ff7p flowise (npm) Fixed in 3.0.6 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-59528
2026-10-03 Alias added: GHSA-3gcm-f6qx-ff7p

References

Exploit 1

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-3gcm-f6qx-ff7p

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2025-59528

Other 8

TI-2025-36193 Flowise Cloud and Local Deployments have Unauthenticated Password Reset Token Disclosure that Leads to Account Takeover CVSS 3.1CRITICAL 9.8
TI-2025-08190 Unsupervised OS command execution leads to remote code execution by unauthenticated network attackers CVSS 3.1CRITICAL 9.8
TI-2026-51595 Flowise before 3.1.3 Sandbox Escape via Puppeteer CVSS 4.0CRITICAL 9.4
TI-2026-49250 Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability CVSS 4.0CRITICAL 9.5
TI-2025-43459 Flowise through 2.2.7 - Arbitrary File Write to Remote Code Execution via document-store API CVSS 4.0CRITICAL 10.0
TI-2025-19292 FlowiseAI Flowise v2.2.6 was discovered to contain an arbitrary file upload vulnerability in /api/v1/attachments. CVSS 3.1CRITICAL 9.8

See all 127 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences