Medium severity6.5NVD Advisory· Published Jun 10, 2026· Updated Jun 10, 2026
CVE-2026-41726
CVE-2026-41726
Description
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 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.
AI Insight
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.springframework.kafka:spring-kafkaMaven | >= 4.0.0, < 4.0.6 | 4.0.6 |
org.springframework.kafka:spring-kafkaMaven | >= 3.3.0, < 3.3.16 | 3.3.16 |
org.springframework.kafka:spring-kafkaMaven | >= 3.2.0, <= 3.2.13 | — |
org.springframework.kafka:spring-kafkaMaven | >= 2.9.0, <= 2.9.13 | — |
org.springframework.kafka:spring-kafkaMaven | <= 2.8.11 | — |
Affected products
1- Range: 4.0.0 - 4.0.5, 3.3.0 - 3.3.15, 3.2.0 - 3.2.13, 2.9.0 - 2.9.13, 2.8.0 - 2.8.11
Patches
Vulnerability mechanics
References
5News mentions
1- Spring Projects: 25 Vulnerabilities Disclosed, Including SpEL Injection and Deserialization FlawsVypr Intelligence · Jun 10, 2026