CVE-2025-71336criticalCWE-78

CVE-2025-71336: fallo crítico en Flowise

Flowise - Unsandboxed Remote Code Execution via Custom MCP

Publicada el · Actualizada el

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Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

28Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 9.3epss 1.1%
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 Flowise's authentication and authorization model is minimal and lacks role-based access control, and the default installation runs without authentication unless FLOWISE_USERNAME and FLOWISE_PASSWORD are set, an attacker can send a crafted JSON payload with the header 'x-request-from: internal' to the /api/v1/node-load-method/customMCP endpoint to execute arbitrary OS commands, resulting in complete compromise of the platform container or server.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Productos afectados
Flowise · Flowise
CVEs relacionadas — Flowise

En el mismo producto, de las más peligrosas a las menos.

CVE-2026-56274HIGHFlowise - Remote Code Execution via MCP Security Bypass in validateCommandFlags and validateArgsForLocalFileAccessEPSS 7.5%CVE-2025-71334CRITICALFlowise - Arbitrary File Access via Missing Chat Flow ID ValidationEPSS 4.4%CVE-2026-56270HIGHFlowise - Unauthenticated OAuth Secrets Disclosure via /api/v1/loginmethod EndpointEPSS 2.0%CVE-2025-71324HIGHFlowise - Arbitrary File Read via chatId ParameterEPSS 1.6%CVE-2026-58057LOWFlowise - Custom MCP Environment Variable Denylist Bypass via Case SensitivityEPSS 1.6%CVE-2025-71338CRITICALFlowise through 2.2.7 - Arbitrary File Write to Remote Code Execution via document-store APIEPSS 1.2%