OS command injection in mcp-remote when connecting to untrusted MCP servers
Priority HIGH 82CWE-78Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-78.
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
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.77027 99th percentileScored 2026-11-07
Fix Fixed mcp-remote (npm): 0.1.16
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | mcp-remote | 0.0.5 – 0.1.15 | — | No fix listed | CNA |
| — | mcp-remote (npm) | 0.0.5 to before 0.1.16 | 0.1.16 | Patch available | GHSA-6xpm-ggf7-wc3p |
- mcp-remote Vendor— Affected 0.0.5 – 0.1.15 Fixed in — No fix listed CNA
- mcp-remote (npm) Vendor— Affected 0.0.5 to before 0.1.16 Fixed in 0.1.16 Patch available GHSA-6xpm-ggf7-wc3p
Remediation
- Fix · GHSA-6xpm-ggf7-wc3p mcp-remote (npm) Fixed in 0.1.16 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-6514
- 2026-10-03 Alias added: GHSA-6xpm-ggf7-wc3p
References
Advisory 2
Sources
- CVE-2025-6514 · CVE Program
- CVE-2025-6514 · NVD
- FIRST EPSS
- GHSA-6xpm-ggf7-wc3p · GitHub Advisory Database · CC BY 4.0
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