Vulnerability · Published Jul 9, 2025 · Assigned by JFROG
CVE-2025-6514OS command injection in mcp-remote when connecting to untrusted MCP servers
Critical 9.6
In plain English
A critical-severity OS command injection in mcp-remote. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 77.0% (higher than 99.6% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.6Critical
Exploit odds (30 days)77.0%top 0.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
mcp-remote is exposed to OS command injection when connecting to untrusted MCP servers due to crafted input from the authorization_endpoint response URL
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | mcp-remote | 0.1.16 | GHSA-6xpm-ggf7-wc3p |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| mcp-remote | 0.0.5 – through 0.1.15 |
Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H