What is CVE-2026-47856?

CVE-2026-47856 is a medium-severity vulnerability in Spring Integration, classified under CWE-502 DESERIALIZATION OF UNTRUSTED DATA. CVSS score: 6.3/10. Published 2026-08-27.

How severe is CVE-2026-47856?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Vulnerability in Spring Integration

CVE-2026-47856

Spring Integration's JSON to object conversion uses the json__TypeId__ header to choose the deserialization target type, and resolves that header value to a class with ClassUtils.forName and no type/package allow-list. Spring Integration 7.1.0 Spring Integration 7.0.0 - 7.0.5 Spring Integration 6.5.0 - 6.5.10 Spring Integration 6.4.0 - 6.4.12 Spring Integration 5.5.21 and earlier

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Spring Integration — versions 7.1.0

References

security@vmware.com

Frequently asked questions

What is CVE-2026-47856?: CVE-2026-47856 is a medium-severity vulnerability in Spring Integration, classified under CWE-502 DESERIALIZATION OF UNTRUSTED DATA. CVSS score: 6.3/10. Published 2026-08-27.
How severe is CVE-2026-47856?: Medium severity. CVSS v3 base score is 6.3 out of 10.