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CVE-2025-6514

CriticalPublished

OS command injection in mcp-remote when connecting to untrusted MCP servers

Published: Jul 9, 2025
Updated: Jul 9, 2025
Assigning CNA: JFROG
Evidence observed: Aug 17, 2026

Primary CVSS

9.6/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS probability estimate

77.9%

High · next 30 days

Percentile: 99.6%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

mcp-remote is exposed to OS command injection when connecting to untrusted MCP servers due to crafted input from the authorization_endpoint response URL

Sources

CVE-2025-6514PoC
mcp-remote exposed to OS command injection

Responsible use

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