CVE-2026-40976_CVE-2026-40976

{
    "lastseen": "",
    "description": "In certain circumstances, Spring Boot's default web security is ineffective allowing unauthorized access to all endpoints. For an application to be vulnerable, it must: be a servlet-based web application; have no Spring Security configuration of its own and rely on the default web security filter chain; depend on spring-boot-actuator-autoconfigure; not depend on spring-boot-health. If any of the above does not apply, the application is not vulnerable.\n\nAffected: Spring Boot 4.0.0\u20134.0.5; upgrade to 4.0.6 or later per vendor advisory.",
    "published": "2026-04-27T23:34:51.422Z",
    "modified": "2026-04-27T23:34:51.422Z",
    "type": "cve",
    "title": "CVE-2026-40976",
    "source": "vmware",
    "references": "https://spring.io/security/cve-2026-40976",
    "id": "CVE-2026-40976",
    "bulletinFamily": "",
    "cwe": [
        "CWE-862"
    ],
    "cvelist": null,
    "sourceData": "Spring Spring Boot 4.0.0",
    "sourceHref": "",
    "cvss": {
        "score": 9.1,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Spring Boot",
    "version": "4.0.0",
    "vendor": "Spring",
    "ai_description": "Spring Boot default web security ineffective allowing unauthorized access",
    "ai_severity": "Critical",
    "ai_vendor": "Spring",
    "ai_product": "Spring Boot",
    "ai_version": "4.0.0-4.0.5",
    "ai_score": 9.1
}