OpenViking Authentication Bypass via VikingBot OpenAPI_CVE-2026-40525

{
    "lastseen": "",
    "description": "OpenViking prior to commit c7bb167 contains an authentication bypass vulnerability in the VikingBot OpenAPI HTTP route surface where the authentication check fails open when the api_key configuration value is unset or empty. Remote attackers with network access to the exposed service can invoke privileged bot-control functionality without providing a valid X-API-Key header, including submitting attacker-controlled prompts, creating or using bot sessions, and accessing downstream tools, integrations, secrets, or data accessible to the bot.",
    "published": "2026-04-17T18:19:12.315Z",
    "modified": "2026-04-17T18:19:12.315Z",
    "type": "cve",
    "title": "OpenViking Authentication Bypass via VikingBot OpenAPI",
    "source": "VulnCheck",
    "references": "https://github.com/volcengine/OpenViking/pull/1447\nhttps://github.com/volcengine/OpenViking/commit/c7bb1676f4d037609f041bf39e4e2bd52e8f9820\nhttps://www.vulncheck.com/advisories/openviking-authentication-bypass-via-vikingbot-openapi",
    "id": "CVE-2026-40525",
    "bulletinFamily": "",
    "cwe": [
        "CWE-636"
    ],
    "cvelist": null,
    "sourceData": "volcengine OpenViking 0",
    "sourceHref": "",
    "cvss": {
        "score": 9.1,
        "severity": "CRITICAL",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/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": "OpenViking",
    "version": "0",
    "vendor": "volcengine",
    "ai_description": "Authentication bypass vulnerability in VikingBot OpenAPI HTTP route surface",
    "ai_severity": "CRITICAL",
    "ai_vendor": "volcengine",
    "ai_product": "OpenViking",
    "ai_version": "0",
    "ai_score": 9.1
}