{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "bb7439b553b9f965adc3d43bcd415c42eebe2f40"
            }
          ],
          "repo": "https://github.com/ondata/ckan-mcp-server",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61612.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "@aborruso/ckan-mcp-server"
          },
          {
            "last_affected": "@aborruso/ckan-mcp-server"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "CKAN MCP Server is a tool for querying CKAN open data portals. Prior to version 0.4.108, the SSRF guard `validateServerUrl` (added for CVE-2026-33060, extended for CVE-2026-53509) validates only the hostname string and never resolves DNS. Any caller-supplied `server_url` whose hostname *resolves* to an internal address passes the guard, so the server issues requests to loopback and cloud metadata (`169.254.169.254`). This is a third bypass of the same guard, and it reaches IMDS — strictly more than CVE-2026-53509, which only reached loopback. Version 0.4.108 contains an updated fix.",
  "id": "CVE-2026-61612",
  "modified": "2026-09-26T03:30:43.917809652Z",
  "published": "2026-09-21T17:37:17.030Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.108"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61612.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-3xm7-qw7j-qc8v"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-g84h-j7jj-x32p"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-798p-78g2-v556"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-61612"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ondata/ckan-mcp-server/commit/bb7439b553b9f965adc3d43bcd415c42eebe2f40"
    }
  ],
  "related": [
    "GHSA-3xm7-qw7j-qc8v",
    "GHSA-g84h-j7jj-x32p",
    "GHSA-798p-78g2-v556"
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "@aborruso/ckan-mcp-server has SSRF via DNS-name → internal IP — incomplete fix of CVE-2026-53509"
}