CVE-2026-41855 HIGH

CVE-2026-41855: Spring Framework Unsafe Deserialization via Jackson JMS Converters

Vendor Spring
Product Spring Framework
Weakness CWE-502 · Unsafe deserialization
Published June 9, 2026
Last update June 10, 2026

CVSS base score

8.1/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 9, 2026 CVE published
June 10, 2026 Record updated

Related vulnerabilities

04Related CVE