{"id":"CVE-2026-10740","summary":"Excessive memory allocation in s2n-quic","details":"Unbounded memory allocation in the CRYPTO frame reassembler in s2n-quic before 1.8.2 may allow an unauthenticated remote actor to cause a denial of service (degraded availability) by sending crafted QUIC Initial packets.\n\n\n\nTo remediate this issue, users should upgrade to v1.8.2.","aliases":["GHSA-9q54-f358-3fqf"],"modified":"2026-07-08T08:12:25.408523275Z","published":"2026-06-10T18:09:36.070Z","database_specific":{"cwe_ids":["CWE-770"],"unresolved_ranges":[{"extracted_events":[{"last_affected":"1.8.1"}],"source":"AFFECTED_FIELD"},{"extracted_events":[{"last_affected":"1.8.1"}],"source":"CPE_FIELD"},{"extracted_events":[{"introduced":"s2n-quic"},{"fixed":"1.8.2"}],"source":"DESCRIPTION"}],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10740.json","cna_assigner":"AMZN"},"references":[{"type":"ADVISORY","url":"https://aws.amazon.com/security/security-bulletins/2026-042-aws/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10740.json"},{"type":"ADVISORY","url":"https://github.com/aws/s2n-quic/security/advisories/GHSA-9q54-f358-3fqf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-10740"},{"type":"FIX","url":"https://github.com/aws/s2n-quic/releases/tag/v1.82.0"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/aws/s2n-quic","events":[{"introduced":"0"},{"fixed":"4438384b247e5cf8615892cfe1ac1c4dc75a2119"}],"database_specific":{"source":"REFERENCES"}}],"versions":["v1.81.0","v1.80.0","v1.79.0","v1.78.0","v1.77.0","v1.76.0","v1.75.0","v1.74.0","v1.73.0","v1.72.0","v1.71.0","v1.70.0","v1.69.0","v1.68.0","v1.67.0","v1.66.0","v1.65","v1.64.0","v1.63.0","v1.62.0","v1.61.0","v1.60.0","v1.59.0","v1.58.0","v1.57.0","v1.56.0","v1.55.0","v1.54.0","v1.52.1","v1.52.0","v1.51.0","v1.50.0","v1.49.0","v1.48.0","v1.47.0","v1.46.0","v1.45.0","v1.43.0","v1.42.0","v1.41.0","v1.40.0","v1.39.0","v1.38.1","v1.38.0","v1.37.0","v1.36.0","v1.35.1","v1.35.0","v1.34.0","v1.33.0","v1.32.0","v1.31.0","v1.30.0","v1.29.0","v1.28.0","v1.27.0","v1.26.0","v1.25.0","v1.24.0","v1.23.0","v1.22.0","v1.21.0","v1.20.0","v1.19.0","v1.18.0","v1.17.1","v1.16.0","v1.15.0","v1.14.0","v1.13.0","v1.12.0","v1.11.0","v1.10.0","v1.9.2","v1.9.1","v1.9.0","v1.8.0","v1.7.0","v1.6.1","v1.6.0","v1.5.0","v1.4.0","v1.3.0","v1.2.0","v1.1.1","v1.1.0","v1.0.2","v1.0.1","v1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10740.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}]}