CVE-2026-47864 PUBLISHED

Unsafe Java deserialization in SerializingHttpMessageConverter — remote code execution

Assigner: vmware
Reserved: 20.05.2026 Published: 27.08.2026 Updated: 27.08.2026

SerializingHttpMessageConverter deserializes the body of incoming HTTP requests with a raw java.io.ObjectInputStream and no class filtering. Any request with Content-Type application/x-java-serialized-object whose body resolves to a Serializable type is read directly via readObject(). If an application using this converter on an inbound HTTP endpoint has any known Java deserialization "gadget" on its classpath, a remote, unauthenticated attacker can achieve arbitrary code execution. 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

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L
CVSS Score: 6.4

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	Low
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	Spring
Product	Spring Integration
Versions	Default: unaffected Version 7.1.0 is affected affected from 7.0.0 to 7.0.5 (incl.) affected from 6.5.0 to 6.5.10 (incl.) affected from 6.4.0 to 6.4.12 (incl.) affected from 0 to 5.5.21 (incl.)

References

https://spring.io/security/cve-2026-47864

Problem Types

CWE-502 Deserialization of Untrusted Data CWE

Impacts

SerializingHttpMessageConverter deserializes the body of incoming HTTP requests with a raw java.io.ObjectInputStream and no class filtering. Any request with Content-Type application/x-java-serialized-object whose body resolves to a Serializable type is read directly via readObject(). If an application using this converter on an inbound HTTP endpoint has any known Java deserialization "gadget" on its classpath, a remote, unauthenticated attacker can achieve arbitrary code execution.