AIKIDO-2026-783453
spring-kafka is vulnerable to Server-Side Request Forgery (SSRF)
65
Medium Risk
This Affects:
spring-kafkaTL;DR
spring-kafka JsonKafkaHeaderMapper and DefaultKafkaHeaderMapper include java.net in the default trusted packages. A producer can send a java.net.InetAddress type header that causes Jackson to call InetAddress.getByName() and trigger DNS resolution. That is SSRF in the default @KafkaListener configuration. The patch removes java.net from the default trusted packages.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and @KafkaListener consumers use the default JSON header mapper.
Background info
spring-kafka is vulnerable to Server-Side Request Forgery (SSRF) in versions 0.0.1 - 4.0.6 and 4.1.0 - 4.1.0.
How to fix this
Upgrade the org.springframework.kafka:spring-kafka library to the patch version.
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