CVE-2026-41726

A flaw was found in spring-kafka. When an application uses the DelegatingDeserializer, a malicious producer can exploit this vulnerability by sending records with unique, random spring.kafka.serialization.selector header values. This can cause the consumer's memory heap to grow without limits,...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the DelegatingDeserializer function. An attacker can exhaust system memory by sending records with unique, random spring.kafka.serialization.selector header values, leading to...

EUVD-2026-35903

When an application opts into DelegatingDeserializer, a producer can grow the consumer's heap without bound by sending records with unique random spring.kafka.serialization.selector header values, eventually causing GC thrash and OutOfMemoryError. Affected versions: Spring for Apache Kafka 4.0.0...

In Spring for Apache Kafka, unbounded delegate cache keyed on user-controlled, potentially malicious selector header

When an application opts into DelegatingDeserializer, a producer can grow the consumer's heap without bound by sending records with unique random spring.kafka.serialization.selector header values, eventually causing GC thrash and OutOfMemoryError. Affected versions: Spring for Apache Kafka 4.0.0...