Heap double-free in AWS Common Runtime aws-c-http_CVE-2026-12043

{
    "lastseen": "",
    "description": "Improper handling of HPACK dynamic table size updates in the AWS Common Runtime aws-c-http library might allow a remote threat actor operating a server to cause memory corruption on a connecting client application, potentially leading to arbitrary code execution, via a crafted sequence of HTTP/2 HEADERS frames.\n\n\n\nTo remediate this issue, users should upgrade to aws-c-http version 0.11.0.",
    "published": "2026-06-12T18:35:51.420Z",
    "modified": "2026-06-12T18:49:54.683Z",
    "type": "cve",
    "title": "Heap double-free in AWS Common Runtime aws-c-http",
    "source": "AMZN",
    "references": "https://github.com/awslabs/aws-c-http/releases/tag/v0.11.0\nhttps://aws.amazon.com/security/security-bulletins/2026-043-aws/\nhttps://github.com/awslabs/aws-c-http/security/advisories/GHSA-rmjr-3qpm-vh98",
    "id": "CVE-2026-12043",
    "bulletinFamily": "",
    "cwe": [
        "CWE-415"
    ],
    "cvelist": null,
    "sourceData": "AWS aws-c-http 0.4.22",
    "sourceHref": "",
    "cvss": {
        "score": 8.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "aws-c-http",
    "version": "0.4.22",
    "vendor": "AWS",
    "ai_description": "Heap double-free vulnerability in AWS Common Runtime aws-c-http library, potentially allowing arbitrary code execution via crafted HTTP/2 HEADERS frames",
    "ai_severity": "High",
    "ai_vendor": "Amazon Web Services (AWS)",
    "ai_product": "AWS Common Runtime aws-c-http",
    "ai_version": "0.4.22",
    "ai_score": 8.8
}