Security advisory

{
  "id": "277c1ce22438609c7b7431e905f0a85f356e91753094fdac0d0c7b96295e310e",
  "url": "https://osv.dev/vulnerability/CVE-2021-37147",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-37147",
    "summary": "Improper input validation vulnerability in header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 8.1.2 and 9.0.0 to 9.1.0.",
    "evidence": "osv:CVE-2021-37147",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-37147",
      "aliases": [
        "CVE-2021-37147"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/trafficserver",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b14030656330ed623cd1f9efe2f4f9abd9d16e29"
                },
                {
                  "last_affected": "682f899871b5af5252d1c1105bf998239a2a8eb8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "9.0.0"
                      },
                      {
                        "last_affected": "9.1.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-37147.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:49.040136223Z",
      "provider": "osv",
      "references": [
        "https://www.debian.org/security/2022/dsa-5153",
        "https://lists.apache.org/thread/k01797hyncx53659wr3o72s5cvkc3164"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "apache:traffic_server",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.0.0"
                  },
                  {
                    "last_affected": "8.1.2"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "10.0"
                  },
                  {
                    "last_affected": "10.0"
                  },
                  {
                    "introduced": "11.0"
                  },
                  {
                    "last_affected": "11.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-37147",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 436910,
  "published_at": "2021-11-03T16:15:07.987+00:00"
}