{"id":"CVE-2026-94450","revision":"9290c8b0e5af4dfe94867af67ee0de0a","records":[{"revision":"9290c8b0e5af4dfe94867af67ee0de0a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-94450","aliases":[],"title":"Potential denial of service when configured to send Retry packets in s2n-quic","description":"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.","state":0,"publishedAt":"2026-09-22T20:04:44.36+00:00","modifiedAt":"2026-10-20T18:11:41.209+00:00","affected":[{"ecosystem":"Vendor product","name":"s2n-quic","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"AWS\",\n                    \"product\": \"s2n-quic\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"1.88.0\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"},{"system":"CVSS 4.0","vector":"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","score":8.7,"severity":"HIGH"}],"references":["https://github.com/aws/s2n-quic/releases/tag/v1.89.0","https://aws.amazon.com/security/security-bulletins/2026-116-aws/","https://github.com/aws/s2n-quic/security/advisories/GHSA-5rw2-6x5m-v22x"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-94450","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-94450","identifiers":["CVE-2026-94450"]},"retained":false,"historicalAffected":[]}],"coverage":[]}