CVE-2026-41855 Spring Framework Unsafe Deserialization via Jackson JMS Converters

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. Affect...

CVE-2026-41855 Spring Framework Unsafe Deserialization via Jackson JMS Converters

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. Affect...

CVE-2026-41855

The CVE affects Spring Framework via unsafe deserialization in JMS converters: MappingJackson2MessageConverter and JacksonJsonMessageConverter allow arbitrary class instantiation in untrusted JMS environments, enabling gadget-based deserialization that could trigger unauthorized actions. Affected...

Deserialization of Untrusted Data

Overview org.springframework:spring-jms is a maven plugin for Spring JMS. Affected versions of this package are vulnerable to Deserialization of Untrusted Data via deserialization in MappingJackson2MessageConverter and JacksonJsonMessageConverter within an untrusted JMS environment. An attacker c...