kyverno apicall servicecall implicit bearer token injection leaks kyverno serviceaccount token_CVE-2026-40868

{
    "lastseen": "",
    "description": "Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to 1.16.4, kyverno\u2019s apiCall servicecall helper implicitly injects Authorization: Bearer ... using the kyverno controller serviceaccount token when a policy does not explicitly set an Authorization header. Because context.apiCall.service.url is policy-controlled, this can send the kyverno serviceaccount token to an attacker-controlled endpoint (confused deputy). Namespaced policies are blocked from servicecall usage by the namespaced urlPath gate in pkg/engine/apicall/apiCall.go, so this report is scoped to ClusterPolicy and global context usage. This vulnerability is fixed in 1.16.4.",
    "published": "2026-04-21T18:22:01.502Z",
    "modified": "2026-04-21T18:22:01.502Z",
    "type": "cve",
    "title": "kyverno apicall servicecall implicit bearer token injection leaks kyverno serviceaccount token",
    "source": "GitHub_M",
    "references": "https://github.com/kyverno/kyverno/security/advisories/GHSA-q93q-v844-jrqp",
    "id": "CVE-2026-40868",
    "bulletinFamily": "",
    "cwe": [
        "CWE-922"
    ],
    "cvelist": null,
    "sourceData": "kyverno kyverno < 1.16.4",
    "sourceHref": "",
    "cvss": {
        "score": 8.1,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
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        "confidentialityImpact": "",
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        "availabilityImpact": "",
        "cvssV3": {
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        }
    },
    "href": "",
    "category_name": "CVE",
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    "product": "kyverno",
    "version": "< 1.16.4",
    "vendor": "kyverno",
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    "ai_score": 0
}