{"id":"CVE-2026-5190","revision":"252dccb545f7404fb7ff84f11f2da054","records":[{"revision":"252dccb545f7404fb7ff84f11f2da054","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-5190","aliases":[],"title":"AWS C Event Stream Streaming Decoder Stack Buffer Overflow","description":"Out-of-bounds write in the streaming decoder component in aws-c-event-stream before 0.6.0 might allow a third party operating a server to cause memory corruption leading to arbitrary code execution on a client application that processes crafted event-stream messages.\n\n\n\nTo remediate this issue, users should upgrade to version 0.6.0 or later.","state":0,"publishedAt":"2026-03-31T17:05:59.601+00:00","modifiedAt":"2026-10-20T18:16:59.122+00:00","affected":[{"ecosystem":"Vendor product","name":"aws-c-event-stream","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"AWS\",\n                    \"product\": \"aws-c-event-stream\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThan\": \"0.6.0\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.5,"severity":"HIGH"},{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":7.7,"severity":"HIGH"}],"references":["https://aws.amazon.com/security/security-bulletins/2026-011-aws/","https://github.com/awslabs/aws-c-event-stream/security/advisories/GHSA-xvjw-fjq5-68hf","https://github.com/awslabs/aws-c-event-stream/releases/tag/v0.6.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-5190","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-5190","identifiers":["CVE-2026-5190"]},"retained":false,"historicalAffected":[]}],"coverage":[]}