Helm’s plugin verification fails open when .prov is missing, allowing unsigned plugin install_CVE-2026-35205

{
    "lastseen": "",
    "description": "Helm is a package manager for Charts for Kubernetes. From 4.0.0 to 4.1.3, Helm will install plugins missing provenance (.prov file) when signature verification is required. This vulnerability is fixed in 4.1.4.",
    "published": "2026-04-09T15:06:41.052Z",
    "modified": "2026-04-09T16:05:00.744Z",
    "type": "cve",
    "title": "Helm's plugin verification fails open when .prov is missing, allowing unsigned plugin install",
    "source": "GitHub_M",
    "references": "https://github.com/helm/helm/security/advisories/GHSA-q5jf-9vfq-h4h7\nhttps://github.com/helm/helm/commit/05fa37973dc9e42b76e1d2883494c87174b6074f\nhttps://github.com/helm/helm/releases/tag/v4.1.4\nhttps://helm.sh/docs/topics/provenance/#the-provenance-file",
    "id": "CVE-2026-35205",
    "bulletinFamily": "",
    "cwe": [
        "CWE-636"
    ],
    "cvelist": null,
    "sourceData": "helm helm >= 4.0.0, < 4.1.4",
    "sourceHref": "",
    "cvss": {
        "score": 8.4,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/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": "",
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            "privilegesRequired": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "helm",
    "version": ">= 4.0.0, < 4.1.4",
    "vendor": "helm",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}