{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.8.0"
              },
              {
                "introduced": "2.7.14"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE"
            ]
          },
          "events": [
            {
              "introduced": "2d674b25625bcc367853d00fe86f6e84390f88cb"
            },
            {
              "fixed": "fbb5be31ac23ef40f51025d6aeaaa91d9f082e4a"
            }
          ],
          "repo": "https://github.com/denoland/deno",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-v8fw-85r8-5m23"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-284"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49411.json"
  },
  "details": "Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.0, the Node.js compatibility TCP path checked the permission against the original hostname string before resolution and then did not re-check after resolution. A caller could therefore pass a numeric alias of an IP address (for example the decimal integer 2130706433 or the hex form 0x7f000001, both of which resolve to 127.0.0.1) and reach the denied destination through node:net.connect or node:http.request's { host, port } options form. This vulnerability is fixed in 2.8.0.",
  "id": "CVE-2026-49411",
  "modified": "2026-08-12T03:51:40.963748493Z",
  "published": "2026-06-23T17:18:07.354Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49411.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/denoland/deno/security/advisories/GHSA-v8fw-85r8-5m23"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49411"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Deno Node TCPWrap numeric hostname aliases bypass --deny-net resolved-IP deny checks"
}