Forge has a basicConstraints bypass in its certificate chain verification (RFC 5280 violation)_CVE-2026-33896

{
    "lastseen": "",
    "description": "Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, `pki.verifyCertificateChain()` does not enforce RFC 5280 basicConstraints requirements when an intermediate certificate lacks both the `basicConstraints` and `keyUsage` extensions. This allows any leaf certificate (without these extensions) to act as a CA and sign other certificates, which node-forge will accept as valid. Version 1.4.0 patches the issue.",
    "published": "2026-03-27T20:50:03.418Z",
    "modified": "2026-03-30T18:53:50.510Z",
    "type": "cve",
    "title": "Forge has a basicConstraints bypass in its certificate chain verification (RFC 5280 violation)",
    "source": "GitHub_M",
    "references": "https://github.com/digitalbazaar/forge/security/advisories/GHSA-2328-f5f3-gj25\nhttps://github.com/digitalbazaar/forge/commit/2e492832fb25227e6b647cbe1ac981c123171e90",
    "id": "CVE-2026-33896",
    "bulletinFamily": "",
    "cwe": [
        "CWE-295"
    ],
    "cvelist": null,
    "sourceData": "digitalbazaar forge < 1.4.0",
    "sourceHref": "",
    "cvss": {
        "score": 7.4,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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            "baseScore": 0,
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "forge",
    "version": "< 1.4.0",
    "vendor": "digitalbazaar",
    "ai_description": "",
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    "ai_product": "",
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    "ai_score": 0
}