{"schema":"threatline.record/2","record":{"id":"CVE-2026-77361","aliases":["GHSA-c5xx-h28h-f682"],"summary":"obsidian-tc : Symlink read-ACL scope bypass via lexical path checks","details":"### 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.","categories":["Libraries & packages"],"product":"obsidian-tc","vendor":"The-40-Thieves","ecosystem":"npm","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-c5xx-h28h-f682","source_modified_at":"2026-10-23T17:28:20Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"obsidian-tc"},"range":"< 1.3.1"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-77361","source_modified_at":"2026-10-16T21:58:14.281Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"obsidian-tc","vendor":"The-40-Thieves","versions":[{"version":"< 1.3.1","status":"affected"}],"defaultStatus":null},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-c5xx-h28h-f682","source_modified_at":"2026-10-23T17:45:03.921444112Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"obsidian-tc","purl":"pkg:npm/obsidian-tc"},"ranges":[{"events":[{"introduced":"0"},{"fixed":"1.3.1"}],"type":"SEMVER"}],"versions":[]}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-c5xx-h28h-f682","source_modified_at":"2026-10-23T17:28:20Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"obsidian-tc"},"version":"1.3.1"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-c5xx-h28h-f682","source_modified_at":"2026-10-23T17:45:03.921444112Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"obsidian-tc","purl":"pkg:npm/obsidian-tc"},"version":"1.3.1"}],"cvss":4.7,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00113,"percentile":0.01345,"score_date":"2026-10-23"},"published_at":"2026-10-13T14:00:39.982Z","modified_at":"2026-10-23T17:45:03.921444112Z","provenance":[{"source":"GitHub Advisory Database","url":"https://github.com/advisories/GHSA-c5xx-h28h-f682","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:28:20Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-77361","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-16T21:58:14.281Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-c5xx-h28h-f682","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:45:03.921444112Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-77361","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["GitHub Advisory Database","CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-c5xx-h28h-f682","tags":["x_refsource_CONFIRM"]},{"source":"CVE List","url":"https://github.com/The-40-Thieves/obsidian-tc/pull/76","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/The-40-Thieves/obsidian-tc/commit/c81d1687e2cfec98a0d8bc5038c029f41ea9c920","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1","tags":["x_refsource_MISC"]},{"url":"https://nvd.nist.gov/vuln/detail/cve-2026-77361","source":"GitHub Advisory Database"},{"url":"https://github.com/advisories/GHSA-c5xx-h28h-f682","source":"GitHub Advisory Database"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-16T21:57:59.773123Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-23T17:45:03.921444112Z","content_hash":"008ca3426f72da73e4dc4d00425841aff96d555a5f4358d299f2b9bf78977b3d"}}