TI-2025-08190 Aliases CVE-2025-8943 GHSA-2vv2-3x8x-4gv7

Unsupervised OS command execution leads to remote code execution by unauthenticated network attackers

CRITICAL 88CWE-306Published 2025-08-14 · Updated 2025-08-18

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass, 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-306 and CWE-78.

Summary

The Custom MCPs feature is designed to execute OS commands, for instance, using tools like `npx` to spin up local MCP Servers. However, Flowise's inherent authentication and authorization model is minimal and lacks role-based access controls (RBAC). Furthermore, in Flowise versions before 3.0.1 the default installation operates without authentication unless explicitly configured. This combination allows unauthenticated network attackers to execute unsandboxed OS commands.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.75296 99th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed flowise: 3.0.1

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
—	flowise	before 3.0.1	3.0.1	Patch available	CNA
—	flowise (npm)	up to 3.0.5	—	No fix listed	GHSA-2vv2-3x8x-4gv7

flowise Vendor— Affected before 3.0.1 Fixed in 3.0.1 Patch available CNA
flowise (npm) Vendor— Affected up to 3.0.5 Fixed in — No fix listed GHSA-2vv2-3x8x-4gv7

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:flowiseai:flowise::::::::	before 3.0.1	Vulnerable	FlowiseAI

cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:* Versions before 3.0.1 Vulnerable ·FlowiseAI

Remediation

Fix · CNA flowise Fixed in 3.0.1

Timeline

2026-10-02 Threatist record created from CVE-2025-8943
2026-10-03 Alias added: GHSA-2vv2-3x8x-4gv7

References

Exploit 1

https://research.jfrog.com/vulnerabilities/flowise-os-command-remote-code-execution-jfsa-2025-001380578/

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2025-8943

Other 2

TI-2025-37059 Flowise has Remote Code Execution vulnerability CVSS 3.1CRITICAL 10.0
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-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