CVE-2026-41731
Fixed upstream EPSS <1%CVSS 8.1
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 header values that caused the consumer to deserialize arbitrary JDK types. Affected versions: Spring for Apache Kafka 4.0.0 through 4.0.5; 3.3.0 through 3.3.15; 3.2.0 through 3.2.13; 2.9.0 through 2.9.13; 2.8.0 through 2.8.11.
Products: Spring For Apache Kafka, Red Hat Fuse 7, Red Hat JBoss Enterprise Application Platform Expansion Pack
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Maven | org.springframework.kafka:spring-kafka | 4.0.6 |
| Maven | org.springframework.kafka:spring-kafka | 3.3.16 |
| Maven | org.springframework.kafka:spring-kafka | no fix |