{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-41849: Spring Framework Denial of Service via Integer Overflow in SpEL Expressions","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-41849","status":"final","version":"1","initial_release_date":"2026-06-09T03:51:17.283Z","current_release_date":"2026-06-09T13:33:03.542Z","revision_history":[{"date":"2026-06-09T03:51:17.283Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"An integer overflow vulnerability exists in the evaluation logic of the Spring Expression Language (SpEL). An attacker can exploit this by supplying a specially crafted SpEL expression that triggers excessive resource consumption, resulting in a Denial of Service (DoS).\n\nAffected versions:\nSpring Framework 5.3.0 through 5.3.48.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-41849 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-41849"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-41849"},{"category":"external","summary":"spring.io","url":"https://spring.io/security/cve-2026-41849"}]},"product_tree":{"branches":[{"category":"vendor","name":"Spring","branches":[{"category":"product_name","name":"Spring Framework","branches":[{"category":"product_version_range","name":">=5.3.0 <5.3.49","product":{"name":"Spring Spring Framework >=5.3.0 <5.3.49","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:spring:spring_framework:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-41849","title":"Spring Framework Denial of Service via Integer Overflow in SpEL Expressions","notes":[{"category":"description","text":"An integer overflow vulnerability exists in the evaluation logic of the Spring Expression Language (SpEL). An attacker can exploit this by supplying a specially crafted SpEL expression that triggers excessive resource consumption, resulting in a Denial of Service (DoS).\n\nAffected versions:\nSpring Framework 5.3.0 through 5.3.48.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 5.3.49.","product_ids":["CSAFPID-1"]}]}]}