CVEvulnerability

CVE-2026-77363

8.8 HIGH Published 2026-10-12 Modified 2026-10-16 Official page ↗
Status
Deferred
Published
2026-10-12
Last modified
2026-10-16
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-1385, CWE-346

Description

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.

Related

Weakness · CWE (2)

  • CWE-1385 Missing Origin Validation in WebSockets weakness
  • CWE-346 Origin Validation Error weakness

References