{"id":"GHSA-84c9-qqpq-2pq5","summary":"obsidian-tc tokens can access arbitrary configured vaults","details":"### Impact\nTool dispatch did not check the caller-supplied `input.vault` against the caller's bound vault (`ctx.vaultId`); the folder ACL was a single global instance and the JWT carried no vault claim. As a result, **any valid token could read, write, or delete any configured vault** by passing `input.vault`, defeating multi-tenant isolation across ~90 tool sites. (`resources/read` was the only surface that already guarded this.)\n\n### Patches\nFixed in **1.3.1** (the fix was developed on the `v1.3.0` tag, which never published to npm; 1.3.1 is the first published release with the fix). Upgrade to `\u003e= 1.3.1`.\n\n### Workarounds\nRun a single vault per server process, or isolate each tenant on a separate process/credential.\n\n### Fix\nA central `input.vault === ctx.vaultId` guard was added in dispatch before the scope check.","aliases":["CVE-2026-77366"],"modified":"2026-10-23T17:45:03.913249027Z","published":"2026-10-23T17:29:17Z","database_specific":{"severity":"CRITICAL","github_reviewed":true,"github_reviewed_at":"2026-10-23T17:29:17Z","nvd_published_at":"2026-10-12T18:17:23Z","cwe_ids":["CWE-639","CWE-863"]},"references":[{"type":"WEB","url":"https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-84c9-qqpq-2pq5"},{"type":"WEB","url":"https://github.com/The-40-Thieves/obsidian-tc/pull/72"},{"type":"WEB","url":"https://github.com/The-40-Thieves/obsidian-tc/commit/38b4992e87dc2715564236e1a42d005ab05a0194"},{"type":"PACKAGE","url":"https://github.com/The-40-Thieves/obsidian-tc"},{"type":"WEB","url":"https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/cve-2026-77366"}],"affected":[{"package":{"name":"obsidian-tc","ecosystem":"npm","purl":"pkg:npm/obsidian-tc"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.3.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-84c9-qqpq-2pq5/GHSA-84c9-qqpq-2pq5.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}