wolfSSL_PKCS7_verify() reports success for degenerate (certs-only) PKCS#7 with no signer_CVE-2026-55961

{
    "lastseen": "",
    "description": "wolfSSL_PKCS7_verify() returning success for a degenerate (certs-only) PKCS#7 object that contains no signer. Such an object has empty signerInfos, so the underlying signed-data verification succeeds without authenticating any content. The compatibility-layer verify path now rejects the object when no signer signature has actually been verified, so a PKCS#7 carrying no valid signature is no longer reported as verified. This is enforced regardless of the PKCS7_NOVERIFY flag, which only suppresses signer certificate chain validation and was never intended to waive the requirement that a signature exist. Only affects OpenSSL compatibility builds that call the PKCS7_verify() compatibility API on potentially degenerate PKCS#7 bundles.",
    "published": "2026-06-25T16:51:18.157Z",
    "modified": "2026-06-25T17:57:46.226Z",
    "type": "cve",
    "title": "wolfSSL_PKCS7_verify() reports success for degenerate (certs-only) PKCS#7 with no signer",
    "source": "wolfSSL",
    "references": "https://github.com/wolfSSL/wolfssl/pull/10702\nhttps://www.wolfssl.com/docs/security-vulnerabilities/",
    "id": "CVE-2026-55961",
    "bulletinFamily": "",
    "cwe": [
        "CWE-347"
    ],
    "cvelist": null,
    "sourceData": "wolfSSL wolfSSL 3.15.7",
    "sourceHref": "",
    "cvss": {
        "score": 8.2,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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            "baseScore": 0,
            "baseSeverity": "",
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            "privilegesRequired": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "wolfSSL",
    "version": "3.15.7",
    "vendor": "wolfSSL",
    "ai_description": "",
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    "ai_score": 0
}