{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.1.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "mcp-ssh-tool"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-22",
      "CWE-208"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-07T21:45:16Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "## Summary\n\n`mcp-ssh-tool` has released version `2.1.1` with security hardening for transfer path authorization and HTTP bearer authentication.\n\nThe release addresses:\n\n- insufficient local path policy enforcement in transfer-related filesystem handling\n- incomplete canonicalization and segment-boundary handling for deny-prefix path policy checks\n- non-constant-time HTTP bearer token comparison\n\n## Impact\n\nAffected versions may allow policy bypass in transfer path handling under specific configurations, and may expose a timing side channel in bearer-token comparison for HTTP deployments.\n\n## Patched Version\n\nUpgrade to `mcp-ssh-tool \u003e= 2.1.1`.\n\n```bash\nnpm install -g mcp-ssh-tool@latest\n```\n\n## Workarounds\n\nFor deployments that cannot immediately upgrade:\n\n- avoid exposing HTTP transport beyond loopback\n- use strict filesystem policy configuration\n- avoid granting MCP clients access to sensitive local transfer paths\n- monitor audit logs for unexpected transfer operations\n\n## Credits\n\nReported by `dodge1218`.",
  "id": "GHSA-j7h9-2jh7-g967",
  "modified": "2026-05-07T21:45:17Z",
  "published": "2026-05-07T21:45:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/oaslananka/mcp-ssh-tool/security/advisories/GHSA-j7h9-2jh7-g967"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/oaslananka/mcp-ssh-tool"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "mcp-ssh-tool has file transfer path policy bypass and bearer token comparison hardening"
}