{"id":"EUVD-2026-97737","revision":null,"records":[{"revision":"5757a85d51e74b9abf2d31d5f7b04b81","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-77366","aliases":[],"title":"obsidian-tc tokens can access arbitrary configured vaults","description":"obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, tool dispatch does not compare the caller-controlled input.vault value with the vault bound to the caller, the JSON Web Token (JWT) has no vault claim, and the folder access-control list is shared globally. Any valid token can therefore select another configured vault and read, write, or delete its contents through affected tools. Version 1.3.1 fixes the vulnerability by binding tokens and request context to a vault and rejecting mismatched input.vault values before scope checks.","state":0,"publishedAt":"2026-10-12T17:54:31.642+00:00","modifiedAt":"2026-10-13T15:14:30.957+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:L/UI:N/S:C/C:H/I:H/A:H","score":9.9,"severity":"CRITICAL"}],"references":["https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-84c9-qqpq-2pq5","https://github.com/The-40-Thieves/obsidian-tc/pull/72","https://github.com/The-40-Thieves/obsidian-tc/commit/38b4992e87dc2715564236e1a42d005ab05a0194","https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-77366","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-77366","identifiers":["CVE-2026-77366"]},"retained":false,"historicalAffected":[]},{"revision":"bad8296c1841463eae2677349c106d8a","observedAt":"2026-11-07T14:29:26.403+00:00","statement":{"source":"euvd","id":"EUVD-2026-97737","aliases":["CVE-2026-77366","GHSA-84c9-qqpq-2pq5"],"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 binding tokens and request context to a vault and rejecting mismatched input.vault values before scope checks.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":9.9,"severity":null}],"references":["https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-84c9-qqpq-2pq5","https://github.com/The-40-Thieves/obsidian-tc/pull/72","https://github.com/The-40-Thieves/obsidian-tc/commit/38b4992e87dc2715564236e1a42d005ab05a0194","https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-97737","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 12, 2026, 5:54:31 PM","dateUpdated":"Oct 13, 2026, 3:14:30 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. 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Prior to 1.3.1, tool dispatch does not compare the caller-controlled input.vault value with the vault bound to the caller, the JSON Web Token (JWT) has no vault claim, and the folder access-control list is shared globally. Any valid token can therefore select another configured vault and read, write, or delete its contents through affected tools. Version 1.3.1 fixes the vulnerability by binding tokens and request context to a vault and rejecting mismatched input.vault values before scope checks.","state":0,"publishedAt":"2026-10-12T18:17:23.83+00:00","modifiedAt":"2026-10-16T16:00:33.533+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":9.9,"severity":"CRITICAL"}],"references":["https://github.com/The-40-Thieves/obsidian-tc/commit/38b4992e87dc2715564236e1a42d005ab05a0194","https://github.com/The-40-Thieves/obsidian-tc/pull/72","https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1","https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-84c9-qqpq-2pq5"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77366","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-639","CWE-863"],"productCriteria":[],"sourceDates":{"published":"2026-10-12T18:17:23.830","lastModified":"2026-10-16T16:00:33.533"},"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-2026-77366","identifiers":["CVE-2026-77366"]},"retained":false,"historicalAffected":[]},{"revision":"a8870d19104b4d2d9a169868d3572f5b","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-84c9-qqpq-2pq5","aliases":["CVE-2026-77366"],"title":"obsidian-tc tokens can access arbitrary configured vaults","description":"### 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 `>= 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.","state":0,"publishedAt":"2026-10-23T17:29:17+00:00","modifiedAt":"2026-10-23T17:45:03.913249+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:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"CRITICAL"}],"references":["https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-84c9-qqpq-2pq5","https://github.com/The-40-Thieves/obsidian-tc/pull/72","https://github.com/The-40-Thieves/obsidian-tc/commit/38b4992e87dc2715564236e1a42d005ab05a0194","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-2026-77366"],"sourceUrl":"https://github.com/advisories/GHSA-84c9-qqpq-2pq5","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-84c9-qqpq-2pq5","identifiers":["GHSA-84c9-qqpq-2pq5","CVE-2026-77366"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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