CVE-2025-8943
Last modified
CVE-2025-8943 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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). EPSS estimates a 70.87% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Flowiseai | Flowise | < 3.0.1 |
References
- https://research.jfrog.com/vulnerabilities/flowise-os-command-remote-code-execution-jfsa-2025-001380578/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2025-8943?
How severe is CVE-2025-8943?
How do I fix CVE-2025-8943?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2025
- CVE-2025-8937A vulnerability has been found in TOTOLINK N350R 1.2.3-B2013…8.8
- CVE-2025-8938A vulnerability was found in TOTOLINK N350R 1.2.3-B20130826.…6.3
- CVE-2025-8939A vulnerability was determined in Tenda AC20 up to 16.03.08.…8.8
- CVE-2025-8940A vulnerability was identified in Tenda AC20 up to 16.03.08.…8.8
- CVE-2025-8941A flaw was found in linux-pam. The pam_namespace module may …7.8
- CVE-2025-8942The WP Hotel Booking WordPress plugin before 2.2.3 lacks pro…9.1
- CVE-2025-8944The OceanWP WordPress theme before 4.1.2 is vulnerable to an…4.3
- CVE-2025-8946A vulnerability has been found in projectworlds Online Notes…9.8
- CVE-2025-8947A vulnerability was found in projectworlds Visitor Managemen…9.8
- CVE-2025-8948A vulnerability was determined in projectworlds Visitor Mana…9.8
- CVE-2025-8949A vulnerability was identified in D-Link DIR-825 2.10. Affec…9.8
- CVE-2025-8950A vulnerability was identified in Campcodes Online Recruitme…9.8
Are you affected by CVE-2025-8943?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST