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CVE-2026-77362GHSA-43R2-C7G8-PRC8

obsidian-tc bridge tools expose data outside the read ACL

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 1.3.1
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • The-40-Thieves obsidian-tc

    fixed in 1.3.1

  • obsidian-tcnpm

    fixed in 1.3.1

References 4

GitHub · The-40-Thieves/obsidian-tc