{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.2.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "48e5ecdcb4166a60b94c252dbe74b0a318110ac4"
            },
            {
              "fixed": "da4d43b5123dae694d6bd9c67b8ab2f19ff23cd1"
            }
          ],
          "repo": "https://github.com/ihor-sokoliuk/mcp-searxng",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-q87f-qc2r-2gw4"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54688.json"
  },
  "details": "mcp-searxng is a Model Context Protocol server that gives AI assistants web search and URL-reading capabilities through SearXNG. Prior to 1.2.0, web_url_read passes a caller-supplied URL to the server-side fetch path while assertUrlAllowed() in src/url-reader.ts runs only when MCP_HTTP_HARDEN is enabled, even though MCP_HTTP_HARDEN is disabled by default in src/http-security.ts. In the default configuration, an attacker who influences the URL selected by a user or AI agent can make the server fetch loopback, private-network, or cloud metadata endpoint resources and return their contents into the model context. file:// URLs remain rejected, and the separate DNS-resolution and redirect-validation bypasses are outside this record. This issue is fixed in version 1.2.0.",
  "id": "CVE-2026-54688",
  "modified": "2026-09-17T03:30:58.632798092Z",
  "published": "2026-09-15T17:46:23.073Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ihor-sokoliuk/mcp-searxng/releases/tag/v1.2.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54688.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/ihor-sokoliuk/mcp-searxng/security/advisories/GHSA-q87f-qc2r-2gw4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54688"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ihor-sokoliuk/mcp-searxng/issues/87#issuecomment-4645453694"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ihor-sokoliuk/mcp-searxng/commit/48e5ecdcb4166a60b94c252dbe74b0a318110ac4"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "mcp-searxng: SSRF in web_url_read: the internal-address guard is disabled by default (MCP_HTTP_HARDEN off)"
}