{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@zenalexa/unicli"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.225.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-346",
      "CWE-352"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-19T21:43:09Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "## Impact\n\nUni-CLI versions before 0.225.2 exposed the legacy JSON-RPC-over-HTTP MCP transport on loopback without validating browser Origin headers before routing requests. A malicious web page could send a CORS simple POST request, such as text/plain, to the local /mcp endpoint and deliver a JSON-RPC body to the dispatcher. If the user had started the local MCP HTTP transport, that page could drive tools/call requests against the user\u0027s local Uni-CLI server.\n\nThe Streamable HTTP transport already enforced this browser-to-localhost boundary. The legacy stateless HTTP path did not, so the two HTTP transports had drifted. This issue is about the browser-to-localhost boundary; it does not change Uni-CLI\u0027s local-code-execution trust model.\n\n## Patches\n\nVersion 0.225.2 fixes the issue by moving the Origin policy into a shared guard and applying it before routing in both HTTP transports. Non-loopback browser Origins are rejected with HTTP 403 before health, OAuth, or /mcp dispatch runs. Non-browser clients that omit Origin remain supported.\n\n## Workarounds\n\nUpgrade to 0.225.2 or later. If upgrading is not immediately possible, do not expose the legacy HTTP MCP transport to browser-originated traffic; use the default stdio transport or the Streamable HTTP transport instead.\n\n## Credits\n\nReported privately by Ryan Vonbrubeck ([@dodge1218](https://github.com/dodge1218)).",
  "id": "GHSA-v3f4-w7r7-v3hm",
  "modified": "2026-06-19T21:43:09Z",
  "published": "2026-06-19T21:43:09Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/olo-dot-io/Uni-CLI/security/advisories/GHSA-v3f4-w7r7-v3hm"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/olo-dot-io/Uni-CLI"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Uni-CLI: Legacy HTTP MCP transport accepted browser-originated localhost requests"
}