obsidian-tc tokens can access arbitrary configured vaults

{
  "id": "46e2b60c5ef5948704c4e7906b6a36496d80baed7a9fb3c937a0dcc931478aa3",
  "url": "https://osv.dev/vulnerability/GHSA-84c9-qqpq-2pq5",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "obsidian-tc tokens can access arbitrary configured vaults",
    "summary": "### Impact Tool 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.) ### Patches Fixed 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`. ### Workarounds Run a single vault per server process, or isolate each tenant on a separate process/credential. ### Fix A central `input.vault === ctx.vaultId` guard was added in dispatch before the scope check.",
    "evidence": "osv:GHSA-84c9-qqpq-2pq5",
    "products": [
      {
        "name": {
          "value": "obsidian-tc",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.3.1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "GHSA-84c9-qqpq-2pq5",
      "aliases": [
        "CVE-2026-77366",
        "GHSA-84c9-qqpq-2pq5"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.3.1"
                }
              ]
            }
          ],
          "package": {
            "name": "obsidian-tc",
            "purl": "pkg:npm/obsidian-tc",
            "ecosystem": "npm"
          },
          "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"
          }
        }
      ],
      "modified": "2026-10-23T17:45:03.913249027Z",
      "provider": "osv",
      "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"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-639",
          "CWE-863"
        ],
        "severity": "CRITICAL",
        "github_reviewed": true,
        "nvd_published_at": "2026-10-12T18:17:23Z",
        "github_reviewed_at": "2026-10-23T17:29:17Z"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-77366",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 416471,
  "published_at": "2026-10-23T17:29:17+00:00"
}