OpenClaw < 2026.3.31 - Resource Exhaustion via Unauthenticated MS Teams Webhook Body Parsing_CVE-2026-41405

{
    "lastseen": "",
    "description": "OpenClaw before 2026.3.31 parses MS Teams webhook request bodies before performing JWT validation, allowing unauthenticated attackers to trigger resource exhaustion. Remote attackers can send malicious Teams webhook payloads to exhaust server resources by bypassing authentication checks.",
    "published": "2026-04-28T18:10:03.317Z",
    "modified": "2026-04-28T18:10:03.317Z",
    "type": "cve",
    "title": "OpenClaw < 2026.3.31 - Resource Exhaustion via Unauthenticated MS Teams Webhook Body Parsing",
    "source": "VulnCheck",
    "references": "https://github.com/openclaw/openclaw/security/advisories/GHSA-p464-m8x6-vhv8\nhttps://github.com/openclaw/openclaw/commit/3834d47099dd13c8244ed6de8b9ea9855c553623\nhttps://www.vulncheck.com/advisories/openclaw-resource-exhaustion-via-unauthenticated-ms-teams-webhook-body-parsing",
    "id": "CVE-2026-41405",
    "bulletinFamily": "",
    "cwe": [
        "CWE-408"
    ],
    "cvelist": null,
    "sourceData": "OpenClaw OpenClaw 0",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "OpenClaw",
    "version": "0",
    "vendor": "OpenClaw",
    "ai_description": "Resource exhaustion vulnerability via unauthenticated MS Teams webhook body parsing",
    "ai_severity": "High",
    "ai_vendor": "OpenClaw",
    "ai_product": "OpenClaw",
    "ai_version": "< 2026.3.31",
    "ai_score": 8.7
}