{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-39885",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-04-07T20:32:03.010Z",
        "datePublished": "2026-04-08T20:34:20.538Z",
        "dateUpdated": "2026-04-09T16:16:59.067Z"
    },
    "containers": {
        "cna": {
            "title": "FrontMCP Affected by SSRF via $ref Dereferencing in Untrusted OpenAPI Specifications",
            "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": 7.5,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/agentfront/frontmcp/security/advisories/GHSA-v6ph-xcq9-qxxj",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/agentfront/frontmcp/security/advisories/GHSA-v6ph-xcq9-qxxj"
                },
                {
                    "name": "https://github.com/agentfront/frontmcp/releases/tag/v1.0.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/agentfront/frontmcp/releases/tag/v1.0.4"
                }
            ],
            "affected": [
                {
                    "vendor": "agentfront",
                    "product": "frontmcp",
                    "versions": [
                        {
                            "version": "< 1.0.4",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "@frontmcp",
                    "product": "adapters",
                    "versions": [
                        {
                            "version": "< 1.0.4",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "@frontmcp",
                    "product": "sdk",
                    "versions": [
                        {
                            "version": "< 1.0.4",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "frontmcp",
                    "product": "mcp-from-openapi",
                    "versions": [
                        {
                            "version": "<  2.3.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-04-08T20:34:20.538Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "FrontMCP is a TypeScript-first framework for the Model Context Protocol (MCP). Prior to 2.3.0, the mcp-from-openapi library uses @apidevtools/json-schema-ref-parser to dereference $ref pointers in OpenAPI specifications without configuring any URL restrictions or custom resolvers. A malicious OpenAPI specification containing $ref values pointing to internal network addresses, cloud metadata endpoints, or local files will cause the library to fetch those resources during the initialize() call. This enables Server-Side Request Forgery (SSRF) and local file read attacks when processing untrusted OpenAPI specifications. This vulnerability is fixed in 2.3.0."
                }
            ],
            "source": {
                "advisory": "GHSA-v6ph-xcq9-qxxj",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/agentfront/frontmcp/security/advisories/GHSA-v6ph-xcq9-qxxj",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-04-09T14:53:12.471902Z",
                                "id": "CVE-2026-39885",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "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": "2026-04-09T16:16:59.067Z"
                }
            }
        ]
    }
}