---
id: CVE-2026-51994
title: >-
  mcp-remote versions 0.1.32 through 0.1.38 are vulnerable to Server-Side
  Request Forgery (SSRF) via the resource_metadata URL extracted from a remote
  MCP server's WWW-Authenticate header
summary: >-
  mcp-remote versions 0.1.32 through 0.1.38 are vulnerable to Server-Side
  Request Forgery (SSRF) via the resource_metadata URL extracted from a remote
  MCP server's WWW-Authenticate header
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-918
published: '2026-09-24'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T19:17:26.853'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-51994'
references:
  - url: 'https://github.com/geelen/mcp-remote'
    label: cve@mitre.org
  - url: 'https://github.com/geelen/mcp-remote/security/advisories'
    label: cve@mitre.org
  - url: 'https://github.com/playb0t/mcp-remote-oauth-security#readme'
    label: cve@mitre.org
  - url: >-
      https://github.com/playb0t/mcp-remote-oauth-security/blob/v1.0.1/advisories/F-01-resource-metadata-ssrf.md
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-09-25T18:11:53.566976Z'
ingestedAt: '2026-09-24T15:45:56.639Z'
epss: 0.00168
epssPercentile: 0.05359
---

## Overview

mcp-remote versions 0.1.32 through 0.1.38 are vulnerable to Server-Side Request Forgery (SSRF) via the resource_metadata URL extracted from a remote MCP server's WWW-Authenticate header

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.