CVE-2026-77363 (GCVE-0-2026-77363)

Vulnerability from cvelistv5 – Published: 2026-10-12 17:45 – Updated: 2026-10-12 17:45
VLAI
Title
obsidian-tc Streamable HTTP transport permits cross-origin loopback vault access
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.
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
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7566 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
The-40-Thieves obsidian-tc Affected: < 1.3.1
guessed Create a notification for this product.
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        }
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    "dateReserved": "2026-08-20T19:28:35.245Z",
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          }
        ],
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    }
  }
}



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