{"id":"CVE-2026-77361","revision":null,"records":[{"revision":"ab9826b5bc894f6d94e5349f67e6b039","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-77361","aliases":[],"title":"obsidian-tc symlink path mismatch bypasses read ACL restrictions","description":"obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, read access-control list (ACL) checks use a lexical vault-relative path while containment checks use the resolved path. An in-vault symlink under an allowed glob that resolves into a denied folder can therefore bypass the read ACL and expose files in the denied folder. Exploitation requires an out-of-band-planted symlink and does not permit an escape from the vault root. Version 1.3.1 fixes the vulnerability by applying ACL checks to the resolved vault-relative path.","state":0,"publishedAt":"2026-10-13T14:00:39.982+00:00","modifiedAt":"2026-10-16T21:58:14.281+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:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","score":4.7,"severity":"MEDIUM"}],"references":["https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-c5xx-h28h-f682","https://github.com/The-40-Thieves/obsidian-tc/pull/76","https://github.com/The-40-Thieves/obsidian-tc/commit/c81d1687e2cfec98a0d8bc5038c029f41ea9c920","https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-77361","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-77361","identifiers":["CVE-2026-77361"]},"retained":false,"historicalAffected":[]},{"revision":"2934edfa46834049b62eb9de74cd64ac","observedAt":"2026-11-07T14:29:21.812+00:00","statement":{"source":"euvd","id":"EUVD-2026-98694","aliases":["CVE-2026-77361","GHSA-c5xx-h28h-f682"],"title":"obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. 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Version 1.3.1 fixes the vulnerability by applying ACL checks to the resolved vault-relative path.","state":0,"publishedAt":"2026-10-13T14:17:42.343+00:00","modifiedAt":"2026-10-16T22:17:55.79+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","score":4.7,"severity":"MEDIUM"}],"references":["https://github.com/The-40-Thieves/obsidian-tc/commit/c81d1687e2cfec98a0d8bc5038c029f41ea9c920","https://github.com/The-40-Thieves/obsidian-tc/pull/76","https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1","https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-c5xx-h28h-f682"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77361","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-59","CWE-863"],"productCriteria":[],"sourceDates":{"published":"2026-10-13T14:17:42.343","lastModified":"2026-10-16T22:17:55.790"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-77361","identifiers":["CVE-2026-77361"]},"retained":false,"historicalAffected":[]},{"revision":"d2aa223987ad40e3943b6552525365c9","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-c5xx-h28h-f682","aliases":["CVE-2026-77361"],"title":"obsidian-tc : Symlink read-ACL scope bypass via lexical path checks","description":"### Impact\nACL checks ran on the lexical vault-relative path while containment used the realpath. An in-vault symlink placed under an allowed glob, whose realpath resolved into a denied folder, passed the read ACL — an intra-vault read-ACL-scope bypass. It requires an out-of-band-planted symlink (no MCP tool creates one) and is not a vault-root escape.\n\n### Patches\nFixed in **1.3.1**. Upgrade to `>= 1.3.1`. ACL enforcement now derives the realpath vault-relative path and feeds a single unified predicate at every site.\n\n### Workarounds\nDo not permit untrusted symlinks inside the vault.","state":0,"publishedAt":"2026-10-23T17:28:19+00:00","modifiedAt":"2026-10-23T17:45:03.9214441+00:00","affected":[{"ecosystem":"npm","name":"obsidian-tc","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.3.1"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-c5xx-h28h-f682","https://github.com/The-40-Thieves/obsidian-tc/pull/76","https://github.com/The-40-Thieves/obsidian-tc/commit/c81d1687e2cfec98a0d8bc5038c029f41ea9c920","https://github.com/The-40-Thieves/obsidian-tc","https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1","https://nvd.nist.gov/vuln/detail/cve-2026-77361"],"sourceUrl":"https://github.com/advisories/GHSA-c5xx-h28h-f682","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-c5xx-h28h-f682","identifiers":["GHSA-c5xx-h28h-f682","CVE-2026-77361"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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