GoBGP: Remote Denial of Service (Panic) via Malformed Well-known Path Attribute_CVE-2026-41642

{
    "lastseen": "",
    "description": "GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP due to a nil pointer dereference. When a malformed BGP UPDATE message contains an unrecognized Path Attribute marked as \"Well-known,\" the daemon fails to interrupt the message handling flow. This results in an illegal memory access and a full process crash (panic). This issue has been patched in version 4.4.0.",
    "published": "2026-05-07T11:50:41.545Z",
    "modified": "2026-05-07T12:34:38.588Z",
    "type": "cve",
    "title": "GoBGP: Remote Denial of Service (Panic) via Malformed Well-known Path Attribute",
    "source": "GitHub_M",
    "references": "https://github.com/osrg/gobgp/security/advisories/GHSA-7235-89m6-f4px\nhttps://github.com/osrg/gobgp/releases/tag/v4.4.0",
    "id": "CVE-2026-41642",
    "bulletinFamily": "",
    "cwe": [
        "CWE-476"
    ],
    "cvelist": null,
    "sourceData": "osrg gobgp = 4.3.0",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "gobgp",
    "version": "= 4.3.0",
    "vendor": "osrg",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}