Security advisory

{
  "id": "cb3add7c24abdc3b16f0c384bc9566ddc47918fcebbf8f69b0d0caa80a8ba09e",
  "url": "https://osv.dev/vulnerability/CVE-2021-4097",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-4097",
    "summary": "phpservermon is vulnerable to Improper Neutralization of CRLF Sequences",
    "evidence": "osv:CVE-2021-4097",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-4097",
      "aliases": [
        "CVE-2021-4097",
        "GHSA-8qv8-fq5w-p966"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/phpservermon/phpservermon",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "162bba0046fcda1580f4fbc7b9ababe3c7c13ce4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "162bba0046fcda1580f4fbc7b9ababe3c7c13ce4"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.4.2",
            "v3.4.1",
            "v3.4.0",
            "v3.3.1",
            "v3.3.0",
            "v3.2.2",
            "v3.2.1",
            "v3.2.0-rc1",
            "v3.0.0",
            "v2.1.0",
            "v2.0.1",
            "v2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-4097.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:55.901673632Z",
      "provider": "osv",
      "references": [
        "https://github.com/phpservermon/phpservermon/commit/162bba0046fcda1580f4fbc7b9ababe3c7c13ce4",
        "https://huntr.dev/bounties/d617ced7-be06-4e34-9db0-63d45c003a43"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:phpservermonitor:php_server_monitor:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "phpservermonitor:php_server_monitor",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "3.6.0"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-4097",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384767,
  "published_at": "2021-12-12T00:15:07.743+00:00"
}