{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "314b6783e19698c85ea9d9b197ff52f7f6a3a374"
            }
          ],
          "repo": "https://github.com/guno1928/alos-http",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-hr6j-w4mw-g9mj"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-248",
      "CWE-754"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55484.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "0.0.0-20260617230736-314b6783e196"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "fixed": "h1_plain.go"
          },
          {
            "fixed": "core.Recovery"
          }
        ],
        "source": "DESCRIPTION"
      }
    ]
  },
  "details": "ALOS HTTP is a Linux-first Go web framework and application server built around a custom networking stack. Prior to 0.0.0-20260617230736-314b6783e196, core/utils.go::sanitizeRequestPath calls splitPathQuery on a request path beginning with a question mark and then performs the unchecked p[0] access without checking whether the resulting path is empty. An unauthenticated client can send a malformed request such as a question-mark-only path through h1_plain.go::ParseH1RequestHead, hpack.go::decodeSimpleGetPathHTTPSRequest, hpack.go::observeHeader, or h3_conn.go::handleRequestStream, causing an out-of-bounds panic before core.Recovery() middleware runs and terminating the server process. This issue is fixed in pseudo-version 0.0.0-20260617230736-314b6783e196.",
  "id": "CVE-2026-55484",
  "modified": "2026-08-30T03:31:00.935934108Z",
  "published": "2026-08-28T19:19:19.749Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55484.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/guno1928/alos-http/security/advisories/GHSA-hr6j-w4mw-g9mj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55484"
    },
    {
      "type": "FIX",
      "url": "https://github.com/guno1928/alos-http/commit/314b6783e19698c85ea9d9b197ff52f7f6a3a374"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ALOS HTTP: Unauthenticated remote DoS: malformed path starting with \"?\" triggers out-of-bounds panic in sanitizeRequestPath, crashing entire server"
}