
CVE-2026-41726 in Spring for Apache Kafka 2.8.0–4.0.5 allows a producer to trigger unbounded heap growth and OutOfMemoryError in consumers using DelegatingDeserializer, the Spring project disclosed. https://threatcluster.io/cluster/cve-2026-41726-heap-growth-vulnerability-in-spring-for-apach-32bbe937
Post summary
Spring project has disclosed CVE-2026-41726, which enables a producer to trigger unbounded heap growth and OutOfMemoryError in Kafka consumers using DelegatingDeserializer across versions 2.8.0–4.0.5. No PoC, exploit, or patch details are mentioned.
