---
id: CVE-2026-53957
title: >-
  Contentful MCP Server is a Model Context Protocol server for the Contentful
  Management API
summary: >-
  Contentful MCP Server is a Model Context Protocol server for the Contentful
  Management API. Prior to @contentful/mcp-server 1.7.19 and
  @contentful/mcp-tools 0.4.5, export_space and import_space in
  packages/mcp-tools/src/tools/jobs/space-…
severity: high
cvss: 7.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-918
vendor: contentful
product: contentful-mcp-server
affected:
  - contentful-mcp-server < 1.7.19
  - mcp-server < 1.7.19
  - mcp-tools < 0.4.5
patched:
  - '@contentful/mcp-server 1.7.19'
  - '@contentful/mcp-tools 0.4.5'
published: '2026-09-15'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T15:16:47.593'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53957'
references:
  - url: >-
      https://github.com/contentful/contentful-mcp-server/commit/fa7477ee48515f4248bc91a025eab0ca83423fe0
    label: security-advisories@github.com
  - url: 'https://github.com/contentful/contentful-mcp-server/pull/376'
    label: security-advisories@github.com
  - url: >-
      https://github.com/contentful/contentful-mcp-server/releases/tag/mcp-server@1.7.19
    label: security-advisories@github.com
  - url: >-
      https://github.com/contentful/contentful-mcp-server/releases/tag/mcp-tools@0.4.5
    label: security-advisories@github.com
  - url: >-
      https://github.com/contentful/contentful-mcp-server/security/advisories/GHSA-2xhg-73j7-rrgx
    label: security-advisories@github.com
  - url: >-
      https://github.com/contentful/contentful-mcp-server/security/advisories/GHSA-2xhg-73j7-rrgx
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://github.com/contentful/contentful-mcp-server/releases/tag/mcp-server%401.7.19
  - url: >-
      https://github.com/contentful/contentful-mcp-server/releases/tag/mcp-tools%400.4.5
  - url: 'https://github.com/advisories/GHSA-2xhg-73j7-rrgx'
tags:
  - nvd
  - cve.org
  - exploit-available
  - ghsa
  - npm
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-17T14:31:40.554851Z'
epss: 0.00415
epssPercentile: 0.33139
aliases:
  - GHSA-2xhg-73j7-rrgx
ecosystem: npm
ingestedAt: '2026-08-19T19:44:03.171Z'
---

## Overview

Contentful MCP Server is a Model Context Protocol server for the Contentful Management API. Prior to @contentful/mcp-server 1.7.19 and @contentful/mcp-tools 0.4.5, export_space and import_space in packages/mcp-tools/src/tools/jobs/space-to-space-migration/exportSpace.ts and packages/mcp-tools/src/tools/jobs/space-to-space-migration/importSpace.ts expose host, proxy, rawProxy, and insecure network options to LLM-controlled tool arguments and combine those options with the server's CONTENTFUL_MANAGEMENT_TOKEN. After space_to_space_migration_handler enables the migration tools, a direct MCP call or prompt injection through attacker-controlled Contentful content can redirect Contentful Management API requests and their Authorization header to an attacker-controlled host or proxy. The regular tools that use createToolClient are unaffected because those tools pin the host from server configuration. Exposure of the personal access token permits persistent out-of-band access to every Contentful space within the token's scope. This issue is fixed in @contentful/mcp-server 1.7.19 and @contentful/mcp-tools 0.4.5.

## Remediation

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

## Package advisory (CVE-2026-53957)

Affected packages:

- `@contentful/mcp-server < 1.7.19`
- `@contentful/mcp-tools < 0.4.5`

Patched in:

- `@contentful/mcp-server 1.7.19`
- `@contentful/mcp-tools 0.4.5`

Source: https://github.com/advisories/GHSA-2xhg-73j7-rrgx