CVE-2026-41855

HIGH

Spring Framework Unsafe Deserialization via Jackson JMS Converters

Title source: cna

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.

References (1)

Core 1

Core References

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

Scores

CVSS v3 8.1

EPSS 0.0026

EPSS Percentile 16.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-502

Status published

Products (4)

Spring/Spring Framework 5.3.0 - 5.3.49

Spring/Spring Framework 6.1.0 - 6.1.28

Spring/Spring Framework 6.2.0 - 6.2.19

Spring/Spring Framework 7.0.0 - 7.0.8

Published Jun 09, 2026

Tracked Since Jun 09, 2026