{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "1.13.0"
                  },
                  {
                    "fixed": "1.31.4"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "fixed": "101c91c656e2c2b88bcf3696a5da035f8c032c71"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "v1.31.4",
                "range": [
                  {
                    "fixed": "b2b34c996f8cbcbc4f78121c14d0502e59673193"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "edccf949f256ab96adbd85098fb591a846d0f433"
            },
            {
              "fixed": "b2b34c996f8cbcbc4f78121c14d0502e59673193"
            },
            {
              "fixed": "101c91c656e2c2b88bcf3696a5da035f8c032c71"
            }
          ],
          "repo": "https://github.com/the-40-thieves/obsidian-tc",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-737x-cwfr-5vvc"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-285",
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115477.json"
  },
  "details": "obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. From 1.13.0 until 1.31.4, on a Streamable HTTP deployment with `auth.jwtSecret` configured and a 2026-07-28-era client declaring `elicitation.form` support, a dispatch-gated tool call offered an `inputRequired` confirmation could still complete after the human declined or cancelled, or the elicitation response was omitted or malformed, provided the client echoed the validly bound `requestState` on resubmission. The server trusted an authentic, call-bound state as proof of approval even though that state was minted before the `elicitation/create` leg was asked and proved only that the resubmission belonged to the same call. A client behaving incorrectly or under an attacker's control could therefore execute dispatch-gated destructive vault operations without the human's approval, while still requiring the caller's ordinary tool permissions. Only tools marked `destructive: true` or requiring a scope with a human-in-the-loop floor were reachable through this bypass. The sixteen handler-side conditionally gated tools, including `write_note` overwrite and `move_note`, did not read elicitation state on the modern wire and let neither approval nor decline through that path. Affected deployments using stdio or leaving `auth.jwtSecret` unset instead used the CLI `elicit_token` fallback and did not offer this `requestState` round trip. The fix does not prevent a malicious client from reporting a fabricated approval, because the server cannot verify that the client displayed the form or that a human saw it. This issue is fixed in version 1.31.4.",
  "id": "CVE-2026-115477",
  "modified": "2026-10-25T02:30:35.890561469Z",
  "published": "2026-10-23T14:04:33.518Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/The-40-Thieves/obsidian-tc/blob/v1.31.4/CHANGELOG.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.31.4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115477.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-737x-cwfr-5vvc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-115477"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/The-40-Thieves/obsidian-tc/issues/967"
    },
    {
      "type": "FIX",
      "url": "https://github.com/The-40-Thieves/obsidian-tc/commit/101c91c656e2c2b88bcf3696a5da035f8c032c71"
    },
    {
      "type": "FIX",
      "url": "https://github.com/The-40-Thieves/obsidian-tc/pull/969"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "obsidian-tc: Declined human-in-the-loop confirmations can permit destructive calls over HTTP"
}