{"id":"CVE-2026-77363","revision":"a22a2a0d1b8f4798a375cec3da7e319b","records":[{"revision":"a22a2a0d1b8f4798a375cec3da7e319b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-77363","aliases":[],"title":"obsidian-tc Streamable HTTP transport permits cross-origin loopback vault access","description":"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.","state":0,"publishedAt":"2026-10-12T17:45:57.107+00:00","modifiedAt":"2026-10-13T16:03:13.858+00:00","affected":[{"ecosystem":"Vendor product","name":"obsidian-tc","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"The-40-Thieves\",\n                    \"product\": \"obsidian-tc\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.3.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-pqh8-4pj7-32xx","https://github.com/The-40-Thieves/obsidian-tc/pull/74","https://github.com/The-40-Thieves/obsidian-tc/commit/6428bfe6fdfd43aa7b4b369be3aecd6a268fb928","https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-77363","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-77363","identifiers":["CVE-2026-77363"]},"retained":false,"historicalAffected":[]}],"coverage":[]}