---
id: CVE-2026-47856
title: >-
  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…
summary: >-
  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…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-502
vendor: vmware
product: spring_integration
affected:
  - spring_integration < 5.5.22
  - 'spring_integration >= 6.4.0, < 6.4.13'
  - 'spring_integration >= 6.5.0, < 6.5.11'
  - 'spring_integration >= 7.0.0, < 7.0.5.1'
  - 'spring_integration >= 7.1.0, < 7.1.0.1'
patched:
  - spring_integration 7.1.0.1
published: '2026-08-27'
updated: '2026-09-04'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-47856'
references:
  - url: 'https://spring.io/security/cve-2026-47856'
    label: security@vmware.com
tags:
  - nvd
epss: 0.00313
epssPercentile: 0.21543
ingestedAt: '2026-09-05T19:43:56.096Z'
---

## Overview

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

- `spring_integration < 5.5.22`
- `spring_integration >= 6.4.0, < 6.4.13`
- `spring_integration >= 6.5.0, < 6.5.11`
- `spring_integration >= 7.0.0, < 7.0.5.1`
- `spring_integration >= 7.1.0, < 7.1.0.1`

## Remediation

Upgrade past the affected range:

- `spring_integration 7.1.0.1`