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GHSA-x863-p983-p4f7

Spring Framework Unsafe Deserialization via Jackson JMS Converters

Source: GitHub Advisory Database (reviewed) High CVE-2026-41855

Packages

EcosystemPackageAffectedFixed in
Maven org.springframework:spring-jms <= 5.3.39 no fix listed
Maven org.springframework:spring-jms >= 6.0.0, <= 6.1.21 no fix listed
Maven org.springframework:spring-jms >= 6.2.0, < 6.2.19 6.2.19
Maven org.springframework:spring-jms >= 7.0.0-M1, < 7.0.8 7.0.8

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.