{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","favicon":"https://feed.craftedsignal.io/favicon-32x32.png","feed_url":"https://feed.craftedsignal.io/products/spring-boot-4.0.x/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Spring Boot 4.0.x","Spring Boot 3.5.x","Spring Boot 3.4.x","Spring Boot 3.3.x","Spring Boot 2.7.x"],"_cs_severities":["medium"],"_cs_tags":["spring","spring-boot","vulnerability","patch"],"_cs_type":"threat","_cs_vendors":["Spring"],"content_html":"\u003cp\u003eOn April 23, 2026, Spring published security advisories addressing vulnerabilities in several Spring Boot versions. These vulnerabilities affect Spring Boot versions 4.0.x prior to 4.0.6, 3.5.x prior to 3.5.14, 3.4.x prior to 3.4.16, 3.3.x prior to 3.3.19, and 2.7.x prior to 2.7.33. The advisories highlight the importance of applying timely security updates to mitigate potential risks. While the specifics of the vulnerabilities are not detailed in this advisory, the breadth of affected versions indicates a potentially widespread impact. Defenders should prioritize identifying and patching vulnerable Spring Boot instances within their environments.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003cp\u003eDue to the lack of specific vulnerability information, a generic attack chain is provided as a hypothetical example:\u003c/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cstrong\u003eReconnaissance:\u003c/strong\u003e An attacker identifies a publicly accessible Spring Boot application running a vulnerable version.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eVulnerability Exploitation:\u003c/strong\u003e The attacker leverages a known or zero-day vulnerability (e.g., remote code execution, authentication bypass) within the Spring Boot application.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eInitial Access:\u003c/strong\u003e Successful exploitation grants the attacker initial access to the server, often with limited privileges.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003ePrivilege Escalation:\u003c/strong\u003e The attacker attempts to escalate privileges using techniques specific to the compromised system (e.g., exploiting kernel vulnerabilities, misconfigured services).\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eLateral Movement:\u003c/strong\u003e With elevated privileges, the attacker moves laterally within the network, compromising other systems and applications.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eData Exfiltration/System Damage:\u003c/strong\u003e The attacker achieves their objective, which may include exfiltrating sensitive data, deploying ransomware, or disrupting critical services.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003ePersistence:\u003c/strong\u003e The attacker establishes persistence mechanisms to maintain access to the compromised environment even after system reboots or security measures are implemented.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eThe impact of successful exploitation could range from data breaches and financial loss to service disruption and reputational damage. The lack of specific vulnerability details in the advisory makes it difficult to assess the exact scope of the potential damage. However, given the widespread use of Spring Boot, a successful widespread exploitation could affect numerous organizations across various sectors.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eReview the Spring Security Advisories (\u003ca href=\"https://spring.io/security\"\u003ehttps://spring.io/security\u003c/a\u003e) for detailed information on the specific vulnerabilities and remediation steps.\u003c/li\u003e\n\u003cli\u003eIdentify all Spring Boot applications within your environment and determine their versions.\u003c/li\u003e\n\u003cli\u003eUpgrade all affected Spring Boot instances to the latest patched versions (4.0.6, 3.5.14, 3.4.16, 3.3.19, or 2.7.33).\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious activity indicative of exploitation attempts, and deploy the provided Sigma rules to your SIEM.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-23T19:41:34Z","date_published":"2026-04-23T19:41:34Z","id":"https://feed.craftedsignal.io/briefs/2026-04-24-spring-boot-vulns/","summary":"Spring released security advisories on April 23, 2026, addressing vulnerabilities in multiple Spring Boot versions, prompting users to update affected installations.","title":"Spring Releases Security Updates for Multiple Spring Boot Versions","url":"https://feed.craftedsignal.io/briefs/2026-04-24-spring-boot-vulns/"}],"language":"en","title":"CraftedSignal Threat Feed - Spring Boot 4.0.x","version":"https://jsonfeed.org/version/1.1"}