CVE-2026-47856

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

State: Published
Severity: 6.3 Medium
Published: Aug 26, 2026
Updated: Aug 27, 2026
Reserved: May 20, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	6.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L	vmware

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
Spring IntegrationSpring	7.1.0Affected 7.0.0 through 7.0.5Affected 6.5.0 through 6.5.10Affected 6.4.0 through 6.4.12Affected 5.5.21 and earlierAffected

References

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

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