Security advisory

{
  "id": "3ff8c5e38e23c8cde1810d259b960794ab50a68eb80a642c865e7c1361266371",
  "url": "https://osv.dev/vulnerability/CVE-2017-10908",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-10908",
    "summary": "H2O version 2.2.3 and earlier allows remote attackers to cause a denial of service in the server via specially crafted HTTP/2 header.",
    "evidence": "osv:CVE-2017-10908",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2017-10908",
      "aliases": [
        "CVE-2017-10908"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/h2o/h2o",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "2a75d26b00fcded91688faadf4313378a1432296"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:dena:h2o:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.2.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.2.3",
            "v2.2.2",
            "v2.2.1",
            "v2.2.0",
            "v2.2.0-beta3",
            "v2.2.0-beta2",
            "v2.2.0-beta1",
            "v1.7.0",
            "v1.7.0-beta5",
            "v1.7.0-beta4",
            "v1.7.0-beta3",
            "v1.7.0-beta2",
            "v1.7.0-beta1",
            "v1.6.0",
            "v1.6.0-beta2",
            "v1.6.0-beta1",
            "v1.5.3",
            "v1.5.2",
            "v1.5.1",
            "v1.5.0",
            "v1.5.0-beta4",
            "v1.5.0-beta3",
            "v1.5.0-beta2",
            "v1.5.0-beta1",
            "v1.4.2",
            "v1.4.1",
            "v1.4.0",
            "v1.3.1",
            "v1.3.0",
            "v1.3.0-beta1",
            "v1.2.0",
            "v1.1.1",
            "v1.1.0",
            "v1.0.1",
            "v0.9.2",
            "v0.9.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-10908.json"
          }
        }
      ],
      "modified": "2026-10-20T10:48:07.748187532Z",
      "provider": "osv",
      "references": [
        "https://github.com/h2o/h2o/issues/1544",
        "https://jvn.jp/en/jp/JVN84182676/index.html"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2017-10908",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 380069,
  "published_at": "2017-12-22T14:29:12.64+00:00"
}