{"id":"CVE-2026-53957","revision":"aae7b5cfe16747768d2e2db9ebd6039c","records":[{"revision":"aae7b5cfe16747768d2e2db9ebd6039c","observedAt":"2026-10-25T13:17:22.268+00:00","statement":{"source":"nvd","id":"CVE-2026-53957","aliases":[],"title":"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-…","description":"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.","state":0,"publishedAt":"2026-09-15T15:17:17.367+00:00","modifiedAt":"2026-09-30T17:51:56.193+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","score":7.7,"severity":"HIGH"}],"references":["https://github.com/contentful/contentful-mcp-server/commit/fa7477ee48515f4248bc91a025eab0ca83423fe0","https://github.com/contentful/contentful-mcp-server/pull/376","https://github.com/contentful/contentful-mcp-server/releases/tag/mcp-server@1.7.19","https://github.com/contentful/contentful-mcp-server/releases/tag/mcp-tools@0.4.5","https://github.com/contentful/contentful-mcp-server/security/advisories/GHSA-2xhg-73j7-rrgx"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53957","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-918"],"productCriteria":[],"sourceDates":{"published":"2026-09-15T15:17:17.367","lastModified":"2026-09-30T17:51:56.193"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-53957","identifiers":["CVE-2026-53957"]},"retained":false,"historicalAffected":[]}],"coverage":[]}