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CVE-2025-8943

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

Published: Aug 14, 2025Updated: Sep 23, 2025 Sources: CVE List NVD GHSA BDUCWE-306
9.8CRITICAL
NVD MITRE
EPSS Score
72.3%
Top 0.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Nuclei · OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-306CWE-862

Affected Products

flowiseai
oss-projectaka flowise, embed, flowise-components
flowiseOn-premWeb App
AI / ML / ai-agent-tooling
npm
package-ecosystem
flowise
OSS Libraries
Flowise AI
aka flowise
Flowise
AI / ML / ai-agent-tooling
and 1 more affected products View all →

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://research.jfrog.com/vulnerabilities/flowise-os-command-remote-code-execution-jfsa-2025-001380578/
research.jfrog.com
https://nvd.nist.gov/vuln/detail/CVE-2025-8943
nvd.nist.gov
https://github.com/FlowiseAI/Flowise
github.com
and 1 more references View all →
News mentions
1

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