CVE-2025-6514
OS command injection in mcp-remote when connecting to untrusted MCP servers
mcp-remote is exposed to OS command injection when connecting to untrusted MCP servers due to crafted input from the authorization_endpoint response URL
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
OS command injection in mcp-remote when connecting to untrusted MCP servers
mcp-remote is exposed to OS command injection when connecting to untrusted MCP servers due to crafted input from the authorization_endpoint response URL
- Record
CVE-2025-6514- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
EUVDEUVD-2025-20823
mcp-remote is exposed to OS command injection when connecting to untrusted MCP servers due to crafted input from the authorization_endpoint response URL
- Record
EUVD-2025-20823- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-6xpm-ggf7-wc3p
mcp-remote exposed to OS command injection via untrusted MCP server connections
mcp-remote is exposed to OS command injection when connecting to untrusted MCP servers due to crafted input from the authorization_endpoint response URL
- Record
GHSA-6xpm-ggf7-wc3p- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
NVD
mcp-remote is exposed to OS command injection when connecting to untrusted MCP servers due to crafted input from the authorization_endpoint response URL
- Record
CVE-2025-6514- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
OSV
OS command injection in mcp-remote when connecting to untrusted MCP servers
mcp-remote is exposed to OS command injection when connecting to untrusted MCP servers due to crafted input from the authorization_endpoint response URL
- Record
CVE-2025-6514- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
OSVGHSA-6xpm-ggf7-wc3p
mcp-remote exposed to OS command injection via untrusted MCP server connections
mcp-remote is exposed to OS command injection when connecting to untrusted MCP servers due to crafted input from the authorization_endpoint response URL
- Record
GHSA-6xpm-ggf7-wc3p- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mcp-remotenpm |
0.0.5 up to 0.1.16 | 0.1.16 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | Cyberency/CVE-2025-6514 | 2025-10-26 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-6514 is a critical vulnerability (CVSS 9.6) in mcp-remote, published July 9, 2025. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 77.0%, the 99th percentile. Fixed in mcp-remote 0.1.16.
References
research.jfrog.com/vulnerabilities/mcp-remote-command-injection-rce-jfsa-2025-001290844
github.com/geelen/mcp-remote/commit/607b226a356cb61a239ffaba2fb3db1c9dea4bac
jfrog.com/blog/2025-6514-critical-mcp-remote-rce-vulnerability
nvd.nist.gov/vuln/detail/CVE-2025-6514
registry.npmjs.org