{"id":"CVE-2026-77361","summary":"obsidian-tc symlink path mismatch bypasses read ACL restrictions","details":"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.","aliases":["GHSA-c5xx-h28h-f682"],"modified":"2026-10-14T02:48:28.231154407Z","published":"2026-10-13T14:00:39.982Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-59","CWE-863"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77361.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77361.json"},{"type":"FIX","url":"https://github.com/The-40-Thieves/obsidian-tc/commit/c81d1687e2cfec98a0d8bc5038c029f41ea9c920"},{"type":"FIX","url":"https://github.com/The-40-Thieves/obsidian-tc/pull/76"},{"type":"WEB","url":"https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1"},{"type":"ADVISORY","url":"https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-c5xx-h28h-f682"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77361"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/the-40-thieves/obsidian-tc","events":[{"introduced":"0"},{"fixed":"3956ed5173ebde7864c7d576c259e9e747b11d76"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.3.1"}],"source":"AFFECTED_FIELD"}}],"versions":["v1.2.1","v1.0.2","v1.0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77361.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}