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OpenAdvisories
Medium · 6.5 CVE-2026-77364 EUVD-2026-97736GHSA-cvp8-vvgf-69q4

obsidian-tc fail-open default ACL exposes Obsidian control-directory secrets

Published Oct 12, 2026 · Updated Oct 15, 2026 · Assigned by GitHub_M

Description

obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, undefined readPaths and writePaths settings allow all paths, strictReadDefault does not protect direct requests, and the .obsidian, .git, and .trash control directories are excluded only during enumeration. An authenticated caller can directly read sensitive files such as .obsidian/plugins/*/data.json, potentially exposing plugin API keys, Obsidian Sync passwords, and other in-vault data. Version 1.3.1 fixes the vulnerability by denying the control directories by default and enforcing strictReadDefault on direct request paths.

Affected products

VendorProductAffectedFixed
The-40-Thieves obsidian-tc < 1.3.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm obsidian-tc < 1.3.1 1.3.1 GHSA-cvp8-vvgf-69q4

References