CVE-2026-77366 (GCVE-0-2026-77366)

Vulnerability from cvelistv5 – Published: 2026-10-12 17:54 – Updated: 2026-10-12 17:54
VLAI
Title
obsidian-tc tokens can access arbitrary configured vaults
Summary
obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, tool dispatch does not compare the caller-controlled input.vault value with the vault bound to the caller, the JSON Web Token (JWT) has no vault claim, and the folder access-control list is shared globally. Any valid token can therefore select another configured vault and read, write, or delete its contents through affected tools. Version 1.3.1 fixes the vulnerability by binding tokens and request context to a vault and rejecting mismatched input.vault values before scope checks.
Severity
9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-863 - Incorrect Authorization
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7568 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.
Show details on NVD website
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        }
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    "dateReserved": "2026-08-20T19:36:13.804Z",
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          }
        ],
        "id": "CVE-2026-77366",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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