Deserialization in Spring Integration

CVE-2026-47864

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

Vulnerability class: Insecure Deserialization

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L.

EPSS exploit prediction

EPSS: 0.059 (93.1th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-47864: rose from 0.041 to 0.059.

EPSS over last 30 days · oldest: 0.041 · newest: 0.059 · change: +0.018

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-47864?
CVE-2026-47864 is a medium-severity vulnerability in Spring Integration, classified under Deserialization of Untrusted Data. CVSS score: 6.4/10. Published 2026-08-27.
How severe is CVE-2026-47864?
Medium severity. CVSS v3 base score is 6.4 out of 10.