{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0adb43901e1a08e85e14b42a8df2442fabc0b64a"
            },
            {
              "fixed": "b9ea91a1c6d6adfec3e9e0483d9d79669e927fa8"
            }
          ],
          "repo": "https://github.com/bitbonsai/mcpvault",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-j99q-93c9-h869"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-178",
      "CWE-41"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57441.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "0.11.4"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "MCPVault is a lightweight Model Context Protocol server for safe access to files in an Obsidian vault. Prior to 0.11.4, PathFilter in src/pathfilter.ts compiles restricted-directory patterns case-sensitively and compares paths without canonicalizing filesystem-equivalent segment names. On case-insensitive macOS and Windows filesystems, case variants of .git, .obsidian, or node_modules pass both isAllowed() and isAllowedForListing() even though the operating system opens the restricted directory, and Windows trailing dots or spaces provide the same bypass. An attacker who influences a path selected by an AI agent can use the bypass in read, write, move, search, or listing operations to expose or modify sensitive repository and Obsidian metadata. Vault-root .. containment is not affected. This issue is fixed in version 0.11.4.",
  "id": "CVE-2026-57441",
  "modified": "2026-09-17T03:30:51.467294222Z",
  "published": "2026-09-15T17:49:10.118Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57441.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/bitbonsai/mcpvault/security/advisories/GHSA-j99q-93c9-h869"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57441"
    },
    {
      "type": "FIX",
      "url": "https://github.com/bitbonsai/mcpvault/commit/0adb43901e1a08e85e14b42a8df2442fabc0b64a"
    },
    {
      "type": "FIX",
      "url": "https://github.com/bitbonsai/mcpvault/commit/b9ea91a1c6d6adfec3e9e0483d9d79669e927fa8"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "MCPVault: PathFilter restricted-directory deny-list bypass via case and trailing dot/space equivalence"
}