Inbound WS-Security allows RSA PKCS#1 v1.5 key transport by default_CVE-2026-40996

{
    "lastseen": "",
    "description": "Wss4jSecurityInterceptor defaulted allowRSA15KeyTransportAlgorithm to true, overriding Apache WSS4J's safer default for validation RequestData. Inbound WS-Security decryption could therefore accept RSA PKCS#1 v1.5 (rsa-1_5) encrypted key material unless operators explicitly reconfigured the flag.\n\nAffected versions:\nSpring Web Services 5.0.0 through 5.0.1; 4.1.0 through 4.1.3; 4.0.0 through 4.0.18; 3.1.0 through 3.1.8.",
    "published": "2026-06-11T05:04:05.227Z",
    "modified": "2026-06-11T05:04:05.227Z",
    "type": "cve",
    "title": "Inbound WS-Security allows RSA PKCS#1 v1.5 key transport by default",
    "source": "vmware",
    "references": "https://spring.io/security/cve-2026-40996",
    "id": "CVE-2026-40996",
    "bulletinFamily": "",
    "cwe": [
        "CWE-327"
    ],
    "cvelist": null,
    "sourceData": "Spring Spring Web Services 5.0.0\nSpring Spring Web Services 4.1.0\nSpring Spring Web Services 4.0.0\nSpring Spring Web Services 3.1.0",
    "sourceHref": "",
    "cvss": {
        "score": 4.8,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
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            "privilegesRequired": "",
            "userInteraction": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Spring Web Services",
    "version": "5.0.0",
    "vendor": "Spring",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
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    "ai_score": 0
}