{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.88.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "845f1cce431e30fc9c3802fda0a7fb0d65c201be"
            }
          ],
          "repo": "https://github.com/aws/s2n-quic",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-5rw2-6x5m-v22x"
  ],
  "database_specific": {
    "cna_assigner": "AMZN",
    "cwe_ids": [
      "CWE-1284"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94450.json"
  },
  "details": "Improper validation of the Destination Connection ID length in s2n-quic 1.88.0 and earlier may allow an unauthenticated remote user to cause a denial of service by shutting down a server endpoint via a single crafted UDP datagram. Only server endpoints specifically configured to send Retry packets are affected.\n\n\n\nTo remediate this issue, users should upgrade to version v1.89.0 or later.",
  "id": "CVE-2026-94450",
  "modified": "2026-09-25T03:30:28.689065102Z",
  "published": "2026-09-22T20:04:44.360Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://aws.amazon.com/security/security-bulletins/2026-116-aws/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94450.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/aws/s2n-quic/security/advisories/GHSA-5rw2-6x5m-v22x"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-94450"
    },
    {
      "type": "FIX",
      "url": "https://github.com/aws/s2n-quic/releases/tag/v1.89.0"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Potential denial of service when configured to send Retry packets in s2n-quic"
}