CVE-2026-59278

A flaw was found in Spring for Apache Kafka. The JsonKafkaHeaderMapper and DefaultKafkaHeaderMapper components, which are used by default in @KafkaListener consumers, include java.net in their list of trusted packages. This allows a remote attacker, by sending a specially crafted message, to inje...

Deserialization Of Untrusted Data

Spring for Apache Kafka is vulnerable to Deserialization of Untrusted Data. The vulnerability is due to JsonKafkaHeaderMapper and DefaultKafkaHeaderMapper trusting java.net packages by default, which allows an external Kafka producer to inject malicious java.net.InetAddress types through the...

CVE-2026-59278

JsonKafkaHeaderMapper and DefaultKafkaHeaderMapper include java.net in their default trusted packages list. When these mappers are used — which is the default configuration for all @KafkaListener consumers — an external Kafka producer can inject a java.net.InetAddress type via the...

CVE-2026-59278: Server-Side Request Forgery (SSRF)

JsonKafkaHeaderMapper and DefaultKafkaHeaderMapper include java.net in their default trusted packages list. When these mappers are used — which is the default configuration for all @KafkaListener consumers — an external Kafka producer can inject a java.net.InetAddress type via the...

CVE-2026-41731: Deserialization of Untrusted Data

JsonKafkaHeaderMapper and the deprecated DefaultKafkaHeaderMapper matched type headers against trusted packages using a prefix check, meaning that trusting any package implicitly trusted all of its subpackages. Combined with Jackson's default bean deserialization, a producer could supply crafted...

PT-2026-48327

Name of the Vulnerable Software and Affected Versions Spring for Apache Kafka versions 4.0.0 through 4.0.5 Spring for Apache Kafka versions 3.3.0 through 3.3.15 Spring for Apache Kafka versions 3.2.0 through 3.2.13 Spring for Apache Kafka versions 2.9.0 through 2.9.13 Spring for Apache Kafka...