Which products and versions are affected by CVE-2025-6514?

Affected: mcp-remote (npm) versions >= 0.0.5. The full list is in the CVE brief.

Is CVE-2025-6514 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2025-6514 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2025-6514?

No public exploit code is known.

Is there a fix for CVE-2025-6514?

Fixed versions are available, including mcp-remote 0.1.16.

How urgently should CVE-2025-6514 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2025-6514

Critical

mcp-remote exposed to OS command injection via untrusted MCP server connections

Published Jul 9, 2025 · Updated Aug 30, 2026 · Also known as GHSA-6xpm-ggf7-wc3p

Key Facts

Patch immediately

CVE-2025-6514 is a critical-severity vulnerability (CVSS 9.6 v3.1) affecting mcp-remote (npm).
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 77% probability of exploitation in the next 30 days.
Fixed versions are available, including mcp-remote 0.1.16.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

9.6

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

EPSS (30-day exploit likelihood)

77%

Higher than 99.5% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2025-6514 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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 Products

2 affected entries in total

Product	Affected versions	Fixed in
mcp-remotenpm	>= 0.0.5	0.1.16

Patched Releases

mcp-remote

0.1.16

Timeline

Publicly disclosed
Jul 9, 2025
Last updated
Aug 30, 2026

Weakness Type

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References

4 more references in the full CVE brief

FAQ

Common Questions.

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: mcp-remote (npm) versions >= 0.0.5. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including mcp-remote 0.1.16.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2025-6514 Running On Your Attack Surface?

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