GHSA-xq69-5h5v-x9x4HighCVSS 8.1

In Spring for Apache Kafka, overly broad trusted-package matching in header mappers exposes JDK classes to deserialization

Published
June 10, 2026
Last Modified
June 12, 2026

🔗 CVE IDs covered (1)

CVE-2026-41731 →

📋 Description

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.

🎯 Affected products5

  • maven/org.springframework.kafka:spring-kafka:>= 4.0.0, <= 4.0.5
  • maven/org.springframework.kafka:spring-kafka:>= 3.3.0, <= 3.3.15
  • maven/org.springframework.kafka:spring-kafka:>= 3.2.0, <= 3.2.13
  • maven/org.springframework.kafka:spring-kafka:>= 2.9.0, <= 2.9.13
  • maven/org.springframework.kafka:spring-kafka:<= 2.8.11

🔗 References (3)