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{"bugzilla": {"description": "Spring Boot: Spring Boot: Security bypass due to ineffective default web security", "id": "2463322", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2463322"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-305", "details": ["A flaw was found in Spring Boot. Under specific conditions, including being a servlet-based web application without custom Spring Security configuration and relying on the default web security filter chain, a remote attacker could bypass security. This allows unauthorized access to all application endpoints, leading to potential information disclosure and circumvention of security controls."], "mitigation": {"lang": "en:us", "value": "To mitigate this flaw, ensure that Spring Boot applications either implement their own Spring Security configuration, thereby not relying on the default web security filter chain, or include a dependency on `spring-boot-health`. Applications that do not meet all the specific conditions outlined for vulnerability are not affected. If `spring-boot-actuator-autoconfigure` is not strictly required, consider removing it."}, "name": "CVE-2026-40976", "package_state": [{"cpe": "cpe:/a:redhat:amq_broker:7", "fix_state": "Not affected", "package_name": "spring-boot", "product_name": "Red Hat AMQ Broker 7"}, {"cpe": "cpe:/a:redhat:amq_broker:7", "fix_state": "Not affected", "package_name": "spring-boot-actuator-autoconfigure", "product_name": "Red Hat AMQ Broker 7"}, {"cpe": "cpe:/a:redhat:amq_clients:2023", "fix_state": "Not affected", "package_name": "spring-boot", "product_name": "Red Hat AMQ Clients"}, {"cpe": "cpe:/a:redhat:camel_spring_boot:4", "fix_state": "Not affected", "package_name": "spring-boot", "product_name": "Red Hat build of Apache Camel for Spring Boot 4"}, {"cpe": "cpe:/a:redhat:camel_spring_boot:4", "fix_state": "Not affected", "package_name": "spring-boot-actuator-autoconfigure", "product_name": "Red Hat build of Apache Camel for Spring Boot 4"}, {"cpe": "cpe:/a:redhat:apache_camel_hawtio:4", "fix_state": "Not affected", "package_name": "spring-boot", "product_name": "Red Hat build of Apache Camel - HawtIO 4"}, {"cpe": "cpe:/a:redhat:apache_camel_hawtio:4", "fix_state": "Not affected", "package_name": "spring-boot-actuator-autoconfigure", "product_name": "Red Hat build of Apache Camel - HawtIO 4"}, {"cpe": "cpe:/a:redhat:optaplanner:::el6", "fix_state": "Not affected", "package_name": "spring-boot", "product_name": "Red Hat build of OptaPlanner 8"}, {"cpe": "cpe:/a:redhat:jboss_data_grid:8", "fix_state": "Affected", "package_name": "spring-boot", "product_name": "Red Hat Data Grid 8"}, {"cpe": "cpe:/a:redhat:jboss_data_grid:8", "fix_state": "Not affected", "package_name": "spring-boot-actuator-autoconfigure", "product_name": "Red Hat Data Grid 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "log4j:2/log4j", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "log4j", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:jboss_fuse:7", "fix_state": "Not affected", "package_name": "spring-boot", "product_name": "Red Hat Fuse 7"}, {"cpe": "cpe:/a:redhat:jboss_fuse:7", "fix_state": "Not affected", "package_name": "spring-boot-actuator-autoconfigure", "product_name": "Red Hat Fuse 7"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:7", "fix_state": "Not affected", "package_name": "spring-boot", "product_name": "Red Hat JBoss Enterprise Application Platform 7"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:7", "fix_state": "Not affected", "package_name": "spring-boot-actuator-autoconfigure", "product_name": "Red Hat JBoss Enterprise Application Platform 7"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:8", "fix_state": "Not affected", "package_name": "spring-boot", "product_name": "Red Hat JBoss Enterprise Application Platform 8"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:8", "fix_state": "Not affected", "package_name": "spring-boot-actuator-autoconfigure", "product_name": "Red Hat JBoss Enterprise Application Platform 8"}, {"cpe": "cpe:/a:redhat:jbosseapxp", "fix_state": "Not affected", "package_name": "spring-boot", "product_name": "Red Hat JBoss Enterprise Application Platform Expansion Pack"}, {"cpe": "cpe:/a:redhat:jbosseapxp", "fix_state": "Not affected", "package_name": "spring-boot-actuator-autoconfigure", "product_name": "Red Hat JBoss Enterprise Application Platform Expansion Pack"}, {"cpe": "cpe:/a:redhat:openshift_devspaces:3", "fix_state": "Not affected", "package_name": "devspaces/openvsx-rhel9", "product_name": "Red Hat OpenShift Dev Spaces"}, {"cpe": "cpe:/a:redhat:openshift_devspaces:3", "fix_state": "Not affected", "package_name": "devspaces/pluginregistry-rhel9", "product_name": "Red Hat OpenShift Dev Spaces"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_bpms_platform:7", "fix_state": "Not affected", "package_name": "spring-boot", "product_name": "Red Hat Process Automation 7"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Not affected", "package_name": "spring-boot", "product_name": "Red Hat Single Sign-On 7"}], "public_date": "2026-04-27T23:34:51Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-40976\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-40976\nhttps://spring.io/security/cve-2026-40976"], "statement": "This is an Important flaw in Spring Boot that allows security bypass under specific application configurations. When a servlet-based web application lacks custom Spring Security configuration, relies on the default web security filter chain, depends on `spring-boot-actuator-autoconfigure`, and does not include `spring-boot-health`, an attacker can gain unauthorized access to all application endpoints. Red Hat JBoss Data Grid (jdg-8.6) is affected by this vulnerability.", "threat_severity": "Important"}

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