{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0adb43901e1a08e85e14b42a8df2442fabc0b64a"
            },
            {
              "fixed": "8795716b90d1c4090a82a58647e030763513f17e"
            }
          ],
          "repo": "https://github.com/bitbonsai/mcpvault",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-9c83-rr99-vfwj"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-22",
      "CWE-538"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57442.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "0.11.5"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "MCPVault is a lightweight Model Context Protocol server for safe access to files in an Obsidian vault. Prior to 0.11.5, 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.",
  "id": "CVE-2026-57442",
  "modified": "2026-09-18T03:30:18.528053925Z",
  "published": "2026-09-15T17:50:48.077Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57442.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/bitbonsai/mcpvault/security/advisories/GHSA-9c83-rr99-vfwj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57442"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/bitbonsai/mcpvault/issues/128"
    },
    {
      "type": "FIX",
      "url": "https://github.com/bitbonsai/mcpvault/commit/0adb43901e1a08e85e14b42a8df2442fabc0b64a"
    },
    {
      "type": "FIX",
      "url": "https://github.com/bitbonsai/mcpvault/commit/8795716b90d1c4090a82a58647e030763513f17e"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "MCPVault: PathFilter restricted directories (.git/.obsidian/node_modules) only denied at vault root, not nested"
}