CVE-2026-41855

Spring Framework Unsafe Deserialization via Jackson JMS Converters

State: Published
Severity: 8.1 High
Published: Jun 9, 2026
Updated: Jun 27, 2026
Reserved: Apr 22, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	vmware

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
Spring FrameworkSpring	7.0.0 to before 7.0.7.1Affected 6.2.0 to before 6.2.18.1Affected 6.1.0 to before 6.1.28Affected 5.3.0 to before 5.3.49Affected

References

https://spring.io/security/cve-2026-41855

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