---
id: CVE-2026-57442
title: >-
  MCPVault is a lightweight Model Context Protocol server for safe access to
  files in an Obsidian vault
summary: >-
  MCPVault is a lightweight Model Context Protocol server for safe access to
  files in an Obsidian vault. Prior to 0.11.5, PathFilter in src/pathfilter.ts
  uses root-anchored deny-list patterns, so nested .git, .obsidian, and
  node_modules pa…
severity: medium
cvss: 6.9
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N'
cwe:
  - CWE-22
  - CWE-538
vendor: bitbonsai
product: mcpvault
affected:
  - mcpvault < 0.11.5
published: '2026-09-15'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T15:17:38.487'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-57442'
references:
  - url: >-
      https://github.com/bitbonsai/mcpvault/commit/0adb43901e1a08e85e14b42a8df2442fabc0b64a
    label: security-advisories@github.com
  - url: >-
      https://github.com/bitbonsai/mcpvault/commit/8795716b90d1c4090a82a58647e030763513f17e
    label: security-advisories@github.com
  - url: 'https://github.com/bitbonsai/mcpvault/issues/128'
    label: security-advisories@github.com
  - url: >-
      https://github.com/bitbonsai/mcpvault/security/advisories/GHSA-9c83-rr99-vfwj
    label: security-advisories@github.com
  - url: 'https://github.com/bitbonsai/mcpvault/issues/128'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-16T14:01:44.030897Z'
cvssSource: cna
ingestedAt: '2026-09-15T18:41:59.142Z'
epss: 0.00166
epssPercentile: 0.06225
---

## Overview

MCPVault is a lightweight Model Context Protocol server for safe access to files in an Obsidian vault. Prior to 0.11.5, PathFilter in src/pathfilter.ts uses root-anchored deny-list patterns, so nested .git, .obsidian, and node_modules path segments do not match the restriction and pass both isAllowed() and isAllowedForListing(). An attacker who influences a path selected by an AI agent can traverse nested repository or Obsidian metadata, read remote URLs or embedded tokens, or cause nested node_modules content to pollute the listAllTags index. This issue is fixed in version 0.11.5.

## Remediation

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