CVE-2026-77363

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Source
https://cve.org/CVERecord?id=CVE-2026-77363
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77363.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-77363
Aliases
Published
2026-10-12T17:45:57Z
Modified
2026-10-28T02:30:28Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
obsidian-tc Streamable HTTP transport permits cross-origin loopback vault access
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-1385",
        "CWE-346"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77363.json"
}
References

Affected packages

Git / github.com/the-40-thieves/obsidian-tc

Affected ranges

Type
GIT
Repo
https://github.com/the-40-thieves/obsidian-tc
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
3956ed5173ebde7864c7d576c259e9e747b11d76
Fixed
6428bfe6fdfd43aa7b4b369be3aecd6a268fb928
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.3.1"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "6428bfe6fdfd43aa7b4b369be3aecd6a268fb928"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v1.3.1",
            "range":  [
                {
                    "fixed":  "3956ed5173ebde7864c7d576c259e9e747b11d76"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

v1.*
v1.0.1
v1.0.2
v1.2.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77363.json"