{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-77363",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-20T19:28:35.245Z",
        "datePublished": "2026-10-12T17:45:57.107Z",
        "dateUpdated": "2026-10-12T17:45:57.107Z"
    },
    "containers": {
        "cna": {
            "title": "obsidian-tc Streamable HTTP transport permits cross-origin loopback vault access",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-346",
                            "lang": "en",
                            "description": "CWE-346: Origin Validation Error",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-1385",
                            "lang": "en",
                            "description": "CWE-1385: Missing Origin Validation in WebSockets",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 8.8,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-pqh8-4pj7-32xx",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-pqh8-4pj7-32xx"
                },
                {
                    "name": "https://github.com/The-40-Thieves/obsidian-tc/pull/74",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/The-40-Thieves/obsidian-tc/pull/74"
                },
                {
                    "name": "https://github.com/The-40-Thieves/obsidian-tc/commit/6428bfe6fdfd43aa7b4b369be3aecd6a268fb928",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/The-40-Thieves/obsidian-tc/commit/6428bfe6fdfd43aa7b4b369be3aecd6a268fb928"
                },
                {
                    "name": "https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1"
                }
            ],
            "affected": [
                {
                    "vendor": "The-40-Thieves",
                    "product": "obsidian-tc",
                    "versions": [
                        {
                            "version": "< 1.3.1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-12T17:45:57.107Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, the Streamable HTTP transport does not validate the Host or Origin header or enable DNS-rebinding protection. When the documented loopback configuration uses auth.mode set to none, a malicious web page can send requests to the local MCP endpoint and receive unrestricted vault access through the http-local caller. Version 1.3.1 fixes the vulnerability by enabling host, origin, and DNS-rebinding validation."
                }
            ],
            "source": {
                "advisory": "GHSA-pqh8-4pj7-32xx",
                "discovery": "UNKNOWN"
            }
        }
    }
}