Spring Integration up to 7.1.0 JSON Deserializer json__TypeId__ deserialization

Summaryinfo

A vulnerability, which was classified as critical, was found in Spring Integration up to 5.5.21/6.4.12/6.5.10/7.0.5/7.1.0. This issue affects some unknown processing of the component JSON Deserializer. The manipulation of the argument json__TypeId__ results in deserialization. This vulnerability was named CVE-2026-47856. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, was found in Spring Integration up to 5.5.21/6.4.12/6.5.10/7.0.5/7.1.0. Affected is some unknown functionality of the component JSON Deserializer. The manipulation of the argument json__TypeId__ with an unknown input leads to a deserialization vulnerability. CWE is classifying the issue as CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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

The advisory is shared for download at spring.io. This vulnerability is traded as CVE-2026-47856 since 05/20/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/27/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-66823). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Spring

Name

• Integration

Version

• 5.5.0
• 5.5.1
• 5.5.2
• 5.5.3
• 5.5.4
• 5.5.5
• 5.5.6
• 5.5.7
• 5.5.8
• 5.5.9
• 5.5.10
• 5.5.11
• 5.5.12
• 5.5.13
• 5.5.14
• 5.5.15
• 5.5.16
• 5.5.17
• 5.5.18
• 5.5.19
• 5.5.20
• 5.5.21
• 6.4.0
• 6.4.1
• 6.4.2
• 6.4.3
• 6.4.4
• 6.4.5
• 6.4.6
• 6.4.7
• 6.4.8
• 6.4.9
• 6.4.10
• 6.4.11
• 6.4.12
• 6.5.0
• 6.5.1
• 6.5.2
• 6.5.3
• 6.5.4
• 6.5.5
• 6.5.6
• 6.5.7
• 6.5.8
• 6.5.9
• 6.5.10
• 7.0
• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.1.0

CPE 2.3info

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CPE 2.2info

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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