Stack Overflow via SESSIONID Cookie in lighttpd_CVE-2026-22903

{
    "lastseen": "",
    "description": "An unauthenticated remote attacker can send a crafted HTTP request containing an overly long SESSIONID cookie. This can trigger a stack buffer overflow in the modified lighttpd server, causing it to crash and potentially enabling remote code execution due to missing stack protections.",
    "published": "2026-02-09T07:39:42.537Z",
    "modified": "2026-02-09T07:39:42.537Z",
    "type": "cve",
    "title": "Stack Overflow via SESSIONID Cookie in lighttpd",
    "source": "CERTVDE",
    "references": "https://certvde.com/de/advisories/VDE-2026-004",
    "id": "CVE-2026-22903",
    "bulletinFamily": "",
    "cwe": [
        "CWE-121"
    ],
    "cvelist": null,
    "sourceData": "WAGO 0852-1322 0.0.0\nWAGO 0852-1328 0.0.0\nWAGO 0852-1322 2.64\nWAGO 0852-1328 2.64",
    "sourceHref": "",
    "cvss": {
        "score": 9.8,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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": "lighttpd",
    "version": "0.0.0, 2.64",
    "vendor": "WAGO",
    "ai_description": "Stack buffer overflow in lighttpd via overly long SESSIONID cookie, potentially enabling remote code execution",
    "ai_severity": "Critical",
    "ai_vendor": "WAGO",
    "ai_product": "lighttpd",
    "ai_version": "0.0.0, 2.64",
    "ai_score": 9.8
}