OpenClaw < 2026.3.24 - Denial of Service via Feishu Webhook Pre-Auth Body Parsing_CVE-2026-35665

{
    "lastseen": "",
    "description": "OpenClaw before 2026.3.24 contains an incomplete fix for CVE-2026-32011 where the Feishu webhook handler accepts request bodies with permissive limits of 1MB and 30-second timeout before signature verification. An unauthenticated attacker can exhaust server connection resources by sending concurrent slow HTTP POST requests to the Feishu webhook endpoint, blocking legitimate webhook deliveries.",
    "published": "2026-04-10T16:03:25.047Z",
    "modified": "2026-04-10T16:58:15.053Z",
    "type": "cve",
    "title": "OpenClaw < 2026.3.24 - Denial of Service via Feishu Webhook Pre-Auth Body Parsing",
    "source": "VulnCheck",
    "references": "https://github.com/openclaw/openclaw/security/advisories/GHSA-w6m8-cqvj-pg5v\nhttps://www.vulncheck.com/advisories/openclaw-denial-of-service-via-feishu-webhook-pre-auth-body-parsing",
    "id": "CVE-2026-35665",
    "bulletinFamily": "",
    "cwe": [
        "CWE-405"
    ],
    "cvelist": null,
    "sourceData": "OpenClaw OpenClaw 0",
    "sourceHref": "",
    "cvss": {
        "score": 6.9,
        "severity": "MEDIUM",
        "vector": "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",
        "version": "4.0"
    },
    "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": "OpenClaw",
    "version": "0",
    "vendor": "OpenClaw",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}