{"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"}}}}

{}

{"affected": [{"affectedData": [{"product": "obsidian-tc", "vendor": "The-40-Thieves", "versions": [{"status": "affected", "version": "< 1.3.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-77363", "lastModified": "2026-10-12T18:17:23.513", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-12T18:17:23.513", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/The-40-Thieves/obsidian-tc/commit/6428bfe6fdfd43aa7b4b369be3aecd6a268fb928"}, {"source": "security-advisories@github.com", "url": "https://github.com/The-40-Thieves/obsidian-tc/pull/74"}, {"source": "security-advisories@github.com", "url": "https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-pqh8-4pj7-32xx"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-346"}, {"lang": "en", "value": "CWE-1385"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-10-12T20:15:07.357032+00:00", "updated": "2026-10-12T20:15:07.357038+00:00", "vendors": []}