CVE-2026-77362

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.

• CWE-200
• CWE-863

• https://github.com/The-40-Thieves/obsidian-tc/commit/5ab2109274acf0070601fa71a62b14ddc9652309
• https://github.com/The-40-Thieves/obsidian-tc/pull/75
• https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1
• https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-43r2-c7g8-prc8

Published

Oct 13, 2026

Last Modified

Oct 13, 2026

Status

Received

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