Security advisory

{
  "id": "5814c3a54521462aff55586ed3af632b25a1964b95b888638ae779ffa3578ecf",
  "url": "https://osv.dev/vulnerability/CVE-2023-40296",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2023-40296",
    "summary": "async-sockets-cpp through 0.3.1 has a stack-based buffer overflow in ReceiveFrom and Receive in udpsocket.hpp when processing malformed UDP packets.",
    "evidence": "osv:CVE-2023-40296",
    "products": [],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-40296",
      "aliases": [
        "CVE-2023-40296"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/eminfedar/async-sockets-cpp",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "d66588d3bc6fe26f27ab2093f8105191723a983d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.3.1"
                      }
                    ],
                    "source": "DESCRIPTION"
                  },
                  {
                    "cpe": "cpe:2.3:a:eminfedar:async-sockets-cpp:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.3.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.3.1",
            "v0.3.0",
            "v3.0",
            "v0.2.1",
            "v0.2",
            "v0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-40296.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:21.777514755Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/40xxx/CVE-2023-40296.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-40296",
        "https://github.com/eminfedar/async-sockets-cpp/issues/32"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/40xxx/CVE-2023-40296.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-40296",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 487609,
  "published_at": "2023-08-14T00:00:00+00:00"
}