What is CVE-2025-71336?

CVE-2025-71336 is a critical-severity vulnerability in Flowise, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-06-25.

How severe is CVE-2025-71336?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Flowise

CVE-2025-71336

Flowise before 3.0.6 (affected versions 2.2.7-patch.1 and earlier) contains an unsandboxed remote code execution vulnerability in the Custom MCP feature, which is designed to execute OS commands such as launching local MCP servers. Because…

Vulnerability class: Command Injection (OS Command Injection)

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Flowise — versions 0, 3.0.6

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2025-71336?: CVE-2025-71336 is a critical-severity vulnerability in Flowise, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-06-25.
How severe is CVE-2025-71336?: Critical severity. CVSS v3 base score is 9.8 out of 10.