{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.17.7"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "ff4de121a2aecad8cd1dbebf1e10b468e7d33ee5"
            }
          ],
          "repo": "https://github.com/xyproto/algernon",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-gj84-924c-48fx"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-1188",
      "CWE-668"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46430.json"
  },
  "details": "Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, the SSE event server bound to 0.0.0.0:5553 on Linux/macOS by default because the platform-dependent host default in engine/flags.go:39-46 set host = \"\" for non-Windows, and utils.JoinHostPort(\"\", \":5553\") resolves to \":5553\". This vulnerability is fixed in 1.17.7.",
  "id": "CVE-2026-46430",
  "modified": "2026-07-08T05:38:36.465128479Z",
  "published": "2026-05-26T16:41:42.059Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46430.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/xyproto/algernon/security/advisories/GHSA-gj84-924c-48fx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46430"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Algernon: Auto-refresh SSE event server binds to all interfaces by default on Linux/macOS"
}