Is CVE-2026-59322 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-59322?

CVE-2026-59322 has a CVSS v3 severity of MEDIUM (6.3).

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CVE-2026-59322

Description

The EmbeddedHeadersJsonMessageMapper defaults to an overly permissive header parsing posture in its constructor. When decodeNativeFormat processes raw byte payloads, it deserializes embedded JSON headers into a plain Map and constructs a GenericMessage with MutableMessageHeaders without sanitizing or filtering untrusted header names by default. 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