---
id: CVE-2026-77361
title: >-
  obsidian-tc is a governed, agent-ready Model Context Protocol server for
  Obsidian vaults
summary: >-
  obsidian-tc is a governed, agent-ready Model Context Protocol server for
  Obsidian vaults. Prior to 1.3.1, read access-control list (ACL) checks use a
  lexical vault-relative path while containment checks use the resolved path. An
  in-vault…
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-59
  - CWE-863
vendor: The-40-Thieves
product: obsidian-tc
affected:
  - obsidian-tc < 1.3.1
patched:
  - obsidian-tc 1.3.1
published: '2026-10-13'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T22:17:55.790'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77361'
references:
  - url: >-
      https://github.com/The-40-Thieves/obsidian-tc/commit/c81d1687e2cfec98a0d8bc5038c029f41ea9c920
    label: security-advisories@github.com
  - url: 'https://github.com/The-40-Thieves/obsidian-tc/pull/76'
    label: security-advisories@github.com
  - url: 'https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1'
    label: security-advisories@github.com
  - url: >-
      https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-c5xx-h28h-f682
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/cve-2026-77361'
  - url: 'https://github.com/advisories/GHSA-c5xx-h28h-f682'
tags:
  - nvd
  - cve.org
  - ghsa
  - npm
epss: 0.00113
epssPercentile: 0.01416
aliases:
  - GHSA-c5xx-h28h-f682
ecosystem: npm
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T21:57:59.773123Z'
ingestedAt: '2026-10-13T14:29:01.864Z'
---

## Overview

obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, read access-control list (ACL) checks use a lexical vault-relative path while containment checks use the resolved path. An in-vault symlink under an allowed glob that resolves into a denied folder can therefore bypass the read ACL and expose files in the denied folder. Exploitation requires an out-of-band-planted symlink and does not permit an escape from the vault root. Version 1.3.1 fixes the vulnerability by applying ACL checks to the resolved vault-relative path.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-77361)

Affected packages:

- `obsidian-tc < 1.3.1`

Patched in:

- `obsidian-tc 1.3.1`

Source: https://github.com/advisories/GHSA-c5xx-h28h-f682