{"id":"CVE-2026-41855","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-41855","summary":"Spring Framework Unsafe Deserialization via Jackson JMS Converters","details":"In an untrusted JMS environment, org.springframework.jms.support.converter.MappingJackson2MessageConverter and org.springframework.jms.support.converter.JacksonJsonMessageConverter allow arbitrary class instantiation, which can lead to unauthorized actions via gadget class deserialization.\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":"2026-09-08T17:56:07.421848Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.springframework:spring-jms","fixedVersion":null},{"ecosystem":"Maven","name":"org.springframework:spring-jms","fixedVersion":null},{"ecosystem":"Maven","name":"org.springframework:spring-jms","fixedVersion":"6.2.19"},{"ecosystem":"Maven","name":"org.springframework:spring-jms","fixedVersion":"7.0.8"}],"fix":{"url":"https://github.com/spring-projects/spring-framework/commit/9bec52b1ec741976658e916850b31f41afd2da2d","label":"spring-projects/spring-framework@9bec52b"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41855"},{"type":"WEB","url":"https://github.com/spring-projects/spring-framework/commit/9bec52b1ec741976658e916850b31f41afd2da2d"},{"type":"PACKAGE","url":"https://github.com/spring-projects/spring-framework"},{"type":"WEB","url":"https://spring.io/security/cve-2026-41855"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-08T17:56:07.421848Z"}}