{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-53957",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-11T15:50:01.282Z",
        "datePublished": "2026-09-15T14:34:53.699Z",
        "dateUpdated": "2026-09-17T14:32:11.722Z"
    },
    "containers": {
        "cna": {
            "title": "Contentful MCP Server: export_space/import_space tools pass LLM-controlled `host`/`proxy` args to CMA client, redirecting server PAT to attacker-controlled endpoint",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-918",
                            "lang": "en",
                            "description": "CWE-918: Server-Side Request Forgery (SSRF)",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 7.7,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "LOW",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/contentful/contentful-mcp-server/security/advisories/GHSA-2xhg-73j7-rrgx",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/contentful/contentful-mcp-server/security/advisories/GHSA-2xhg-73j7-rrgx"
                },
                {
                    "name": "https://github.com/contentful/contentful-mcp-server/pull/376",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/contentful/contentful-mcp-server/pull/376"
                },
                {
                    "name": "https://github.com/contentful/contentful-mcp-server/commit/fa7477ee48515f4248bc91a025eab0ca83423fe0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/contentful/contentful-mcp-server/commit/fa7477ee48515f4248bc91a025eab0ca83423fe0"
                },
                {
                    "name": "https://github.com/contentful/contentful-mcp-server/releases/tag/mcp-server@1.7.19",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/contentful/contentful-mcp-server/releases/tag/mcp-server@1.7.19"
                },
                {
                    "name": "https://github.com/contentful/contentful-mcp-server/releases/tag/mcp-tools@0.4.5",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/contentful/contentful-mcp-server/releases/tag/mcp-tools@0.4.5"
                }
            ],
            "affected": [
                {
                    "vendor": "contentful",
                    "product": "contentful-mcp-server",
                    "versions": [
                        {
                            "version": "< 1.7.19",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "@contentful",
                    "product": "mcp-server",
                    "versions": [
                        {
                            "version": "< 1.7.19",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "@contentful",
                    "product": "mcp-tools",
                    "versions": [
                        {
                            "version": "< 0.4.5",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-15T14:34:53.699Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "source": {
                "advisory": "GHSA-2xhg-73j7-rrgx",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/contentful/contentful-mcp-server/security/advisories/GHSA-2xhg-73j7-rrgx",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-17T14:31:40.554851Z",
                                "id": "CVE-2026-53957",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-17T14:32:11.722Z"
                }
            }
        ]
    }
}