{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-40976", "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "state": "PUBLISHED", "assignerShortName": "vmware", "dateReserved": "2026-04-16T02:19:04.616Z", "datePublished": "2026-04-27T23:34:51.422Z", "dateUpdated": "2026-04-27T23:34:51.422Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "shortName": "vmware", "dateUpdated": "2026-04-27T23:34:51.422Z"}, "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-862: Missing Authorization", "type": "CWE", "cweId": "CWE-862"}]}], "impacts": [{"descriptions": [{"lang": "en", "value": "Per CVSS v3.1: Confidentiality HIGH; Integrity HIGH; Availability NONE."}]}], "affected": [{"vendor": "Spring", "product": "Spring Boot", "modules": ["spring-boot-actuator-autoconfigure"], "versions": [{"status": "affected", "version": "4.0.0", "lessThan": "4.0.6", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>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:</p><ul><li>be a servlet-based web application</li><li>have no Spring Security configuration of its own and rely on the default web security filter chain</li><li>depend on <code>spring-boot-actuator-autoconfigure</code></li><li>not depend on <code>spring-boot-health</code></li></ul><p>If any of the above does not apply, the application is not vulnerable.</p><p>Affected: Spring Boot 4.0.0\u20134.0.5; upgrade to 4.0.6 or later per vendor advisory.</p>"}]}], "references": [{"url": "https://spring.io/security/cve-2026-40976"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.1"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-40976", "lastModified": "2026-04-28T00:16:24.803", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "security@vmware.com", "type": "Secondary"}]}, "published": "2026-04-28T00:16:24.803", "references": [{"source": "security@vmware.com", "url": "https://spring.io/security/cve-2026-40976"}], "sourceIdentifier": "security@vmware.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "security@vmware.com", "type": "Secondary"}]}

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