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Medium · 4.3 CVE-2026-77362 EUVD-2026-98689GHSA-43r2-c7g8-prc8

obsidian-tc bridge tools expose data outside the read ACL

Published Oct 13, 2026 · Updated Oct 13, 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, bridge tools do not consistently apply the read access-control list (ACL) to every returned field. The tasks_filter tool exposes group counts derived from denied notes, makemd_query passes unfiltered sibling result fields through, and list_templates exposes template paths and parsed user-function bodies without a read-whitelist check. An authenticated caller can consequently infer or read data from notes outside the caller's read ACL. Version 1.3.1 fixes the vulnerability by filtering path-attributable fields and applying the read whitelist to list_templates.

Affected products

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

Affected packages

EcosystemPackageAffectedFixedRecord
npm obsidian-tc < 1.3.1 1.3.1 GHSA-43r2-c7g8-prc8

References