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
MEDIUM
Vulnerability intelligence
CVE-2026-47864
CVSS 3.16.4
SeverityMedium
Known exploitedNo
NVD references:
Primary source: NIST National Vulnerability Database