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Spring Framework Unsafe Deserialization via Jackson JMS Converters

Spring Framework · CVE-2026-41855
0 news outlets0 CERTs and agencies0 researchers

What is it?

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.

Evidence

No coverage recorded yet.

Exploitation

  • Public proof of concept
  • Exploited in the wild
  • Listed as known exploited
CVSS
8.1
EPSS
0.3%
First seen
2 d ago
Status
corroborated

All Spring vulnerabilities