What is CVE-2026-41855?

CVE-2026-41855 is a high-severity vulnerability in Spring Framework, classified under Deserialization of Untrusted Data. CVSS score: 8.1/10. Published 2026-06-09.

How severe is CVE-2026-41855?

High severity. CVSS v3 base score is 8.1 out of 10.

Deserialization in Spring Framework

CVE-2026-41855

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 una…

Vulnerability class: Insecure Deserialization

EPSS: 0.003 (18.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Spring Framework — versions 7.0.0, 6.2.0, 6.1.0
Vmware Spring_framework

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

security@vmware.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-41855?: CVE-2026-41855 is a high-severity vulnerability in Spring Framework, classified under Deserialization of Untrusted Data. CVSS score: 8.1/10. Published 2026-06-09.
How severe is CVE-2026-41855?: High severity. CVSS v3 base score is 8.1 out of 10.