CVE-2026-77363 (GCVE-0-2026-77363)
Vulnerability from cvelistv5
Published
2026-10-12 17:45
Modified
2026-10-13 16:03
Severity ?
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-346 - Origin Validation Error
  • CWE-1385 - Missing Origin Validation in WebSockets
Summary
obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, the Streamable HTTP transport does not validate the Host or Origin header or enable DNS-rebinding protection. When the documented loopback configuration uses auth.mode set to none, a malicious web page can send requests to the local MCP endpoint and receive unrestricted vault access through the http-local caller. Version 1.3.1 fixes the vulnerability by enabling host, origin, and DNS-rebinding validation.
References
Impacted products
Vendor Product Version
The-40-Thieves obsidian-tc Version: < 1.3.1
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