Security advisory

{
  "id": "d5a8ba7a00b13b3e251c4a74631ab2864508d9592600bc2ca21fec27d67ad449",
  "url": "https://osv.dev/vulnerability/CVE-2020-11709",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-11709",
    "summary": "cpp-httplib through 0.5.8 does not filter \\r\\n in parameters passed into the set_redirect and set_header functions, which creates possibilities for CRLF injection and HTTP response splitting in some specific contexts.",
    "evidence": "osv:CVE-2020-11709",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-11709",
      "aliases": [
        "CVE-2020-11709"
      ],
      "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/yhirose/cpp-httplib",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "402d47e2cd819e420fd28af074d8de0fb2d19a0f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:yhirose:cpp-httplib:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.5.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.5.8",
            "v0.5.7",
            "v0.5.6",
            "v0.5.5",
            "v0.5.4",
            "v0.5.3",
            "v0.5.2",
            "v0.5.1",
            "v0.5.0",
            "v0.4.2",
            "v0.4.1",
            "v0.4.0",
            "v0.3.3",
            "v0.3.2",
            "v0.3.1",
            "v0.3.0",
            "v0.2.6",
            "v0.2.5",
            "v0.2.4",
            "v0.2.3",
            "v0.2.2",
            "v0.2.1",
            "v0.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-11709.json"
          }
        }
      ],
      "modified": "2026-10-20T10:51:48.583987319Z",
      "provider": "osv",
      "references": [
        "https://gist.github.com/shouc/a9330df817128bc4c4132abf3de09495",
        "https://github.com/yhirose/cpp-httplib/issues/425"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-11709",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 382974,
  "published_at": "2020-04-12T14:15:10.75+00:00"
}