High, CVSS 8.1MavenPublished
Spring Framework Unsafe Deserialization via Jackson JMS Converters
CVE-2026-41855 · GHSA-x863-p983-p4f7
- Affected
- Maven org.springframework:spring-jms <= 5.3.39; >= 6.0.0, <= 6.1.21; >= 6.2.0, <= 6.2.18; >= 7.0.0-M1, <= 7.0.7
- Fixed in
- 7.0.86.2.19· Partial vendor fix
- Issue
- 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.
Recommended action: Upgrade to 7.0.8 or 6.2.19 by release line; some affected versions have no fix yet, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.