Security advisory

{
  "id": "9f199b50ec47b5873cda0c68c837158a549646faf5f9362fd12cd1761f7b68f4",
  "url": "https://osv.dev/vulnerability/CVE-2016-1546",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2016-1546",
    "summary": "The Apache HTTP Server 2.4.17 and 2.4.18, when mod_http2 is enabled, does not limit the number of simultaneous stream workers for a single HTTP/2 connection, which allows remote attackers to cause a denial of service (stream-processing outage) via modified flow-control windows.",
    "evidence": "osv:CVE-2016-1546",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2016-1546",
      "aliases": [
        "CVE-2016-1546"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/httpd",
              "type": "GIT",
              "events": [
                {
                  "introduced": "47a9d8e8abf5697b4580c3ee2ade302b5c058fa6"
                },
                {
                  "last_affected": "b7ef32c4957883ab17105fa82e6331bf48bed78a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:http_server:2.4.17:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.4.17"
                      },
                      {
                        "last_affected": "2.4.17"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:http_server:2.4.18:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.4.18"
                      },
                      {
                        "last_affected": "2.4.18"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.4.17",
            "2.4.18"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-1546.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:19.195727465Z",
      "provider": "osv",
      "references": [
        "https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/r04e89e873d54116a0635ef2f7061c15acc5ed27ef7500997beb65d6f%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/rb14daf9cc4e28d18cdc15d6a6ca74e565672fabf7ad89541071d008b%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/re1e3a24664d35bcd0a0e793e0b5fc6ca6c107f99a1b2c545c5d4b467%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E",
        "https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E",
        "https://access.redhat.com/errata/RHSA-2017:1161",
        "https://security.gentoo.org/glsa/201610-02",
        "https://security.netapp.com/advisory/ntap-20180601-0001/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2016-1546",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 429959,
  "published_at": "2016-07-06T14:59:01.503+00:00"
}