medium6.5
CVE-2026-41726
When an application opts into DelegatingDeserializer, a producer can grow the consumer's heap without bound by sending records with unique random spring.kafka.…
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.springframework.kafka:spring-kafka | >= 4.0.0, <= 4.0.5 | 4.0.6 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Vmware | Spring For Apache Kafka | before 2.8.12 from 2.9.0 before 2.9.14 from 3.2.0 before 3.2.14 from 3.3.0 before 3.3.15.1 from 4.0.0 before 4.0.5.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-xvfq-4q6q-gxx7
- https://nvd.nist.gov/vuln/detail/CVE-2026-41726
- https://spring.io/security/cve-2026-41726
- https://github.com/spring-projects/spring-kafka/issues/4489
- https://github.com/spring-projects/spring-kafka/commit/ca2337ba789c5778a10197bda17a62915247ff6c