Bug 2486704 (CVE-2026-41855)

Summary: CVE-2026-41855 spring-jms: Spring Framework: Arbitrary code execution via deserialization in JMS message converters
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: sdawley
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Spring Framework. In an untrusted Java Message Service (JMS) environment, the MappingJackson2MessageConverter and JacksonJsonMessageConverter components allow for arbitrary class instantiation. This vulnerability can be exploited by a remote attacker through gadget class deserialization, potentially leading to unauthorized actions or arbitrary code execution.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-06-09 05:01:36 UTC 
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.

Affected versions:
Spring 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.