CVE-2026-47856 — JsonToObjectTransformer resolves the json__TypeId__ message header to an arbitrary class without an allow-list

CVE-2026-47856

JsonToObjectTransformer resolves the json__TypeId__ message header to an arbitrary class without an allow-list PUBLISHED

Description (CNA)

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

Affected (CNA)

Vendor / product	Versions
Spring / Spring Integration	affected 7.1.0; affected 7.0.0 through 7.0.5; affected 6.5.0 through 6.5.10; affected 6.4.0 through 6.4.12; affected 0 through 5.5.21

CWE

No CWE identifiers supplied.

References

https://spring.io/security/cve-2026-47856

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.