CVE-2026-40976

{"id": "CVE-2026-40976", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security@vmware.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 3.9}]}, "published": "2026-04-28T00:16:24.803", "references": [{"url": "https://spring.io/security/cve-2026-40976", "tags": ["Vendor Advisory"], "source": "security@vmware.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@vmware.com", "description": [{"lang": "en", "value": "CWE-862"}]}], "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."}], "lastModified": "2026-04-30T13:54:12.847", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "12A166C5-8B55-4BA3-AA8B-6024A257D441", "versionEndExcluding": "4.0.6", "versionStartIncluding": "4.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@vmware.com"}