Spring Integration 6.5.x-7.1 JSON Deser via json_TypeId__ Header (No Whitelist)
CVE-2026-47856 Published on August 26, 2026

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

NVD

Vulnerability Analysis

CVE-2026-47856 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be low. considered to have a small impact on confidentiality and integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
LOW
Integrity Impact:
LOW
Availability Impact:
LOW

Products Associated with CVE-2026-47856

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VMware Spring Framework
 

Affected Versions

Spring Integration: