{"id":"CVE-2026-41850","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-41850","summary":"Spring Framework Algorithmic Denial of Service via SpEL Expressions","details":"Applications that evaluate user-supplied Spring Expression Language (SpEL) expressions are vulnerable to an Algorithmic Denial of Service (DoS). By providing a specially crafted expression, an attacker can trigger excessive resource consumption during evaluation, leading to application degradation or unavailability.\n\nAffected versions:\nSpring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.","published":"2026-06-09T06:31:58Z","modified":"2026-07-31T15:09:20.125259919Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.0036,"percentile":0.28687,"asOf":"2026-08-09"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.springframework:spring-expression","fixedVersion":"7.0.8"},{"ecosystem":"Maven","name":"org.springframework:spring-expression","fixedVersion":"6.2.19"},{"ecosystem":"Maven","name":"org.springframework:spring-expression","fixedVersion":null},{"ecosystem":"Maven","name":"org.springframework:spring-expression","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41850"},{"type":"PACKAGE","url":"https://github.com/spring-projects/spring-framework"},{"type":"WEB","url":"https://github.com/spring-projects/spring-framework/releases/tag/v6.2.19"},{"type":"WEB","url":"https://github.com/spring-projects/spring-framework/releases/tag/v7.0.8"},{"type":"WEB","url":"https://spring.io/security/cve-2026-41850"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-31T15:09:20.125259919Z"}}