GHSA-xvfq-4q6q-gxx7
In Spring for Apache Kafka, unbounded delegate cache keyed on user-controlled, potentially malicious selector header
Details
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.
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Affected packages
4.0.0 Fixed in: 4.0.6 # pom.xml: bump <version>4.0.6</version> for org.springframework.kafka:spring-kafka 3.3.0 Fixed in: 3.3.16 # pom.xml: bump <version>3.3.16</version> for org.springframework.kafka:spring-kafka 3.2.0 No fixed version published yet for org.springframework.kafka:spring-kafka (maven). Pin to a known-safe version or switch to an alternative.
2.9.0 No fixed version published yet for org.springframework.kafka:spring-kafka (maven). Pin to a known-safe version or switch to an alternative.
0 No fixed version published yet for org.springframework.kafka:spring-kafka (maven). Pin to a known-safe version or switch to an alternative.
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-41726 [ADVISORY]
- https://github.com/spring-projects/spring-kafka/issues/4489 [WEB]
- https://github.com/spring-projects/spring-kafka/commit/ca2337ba789c5778a10197bda17a62915247ff6c [WEB]
- https://github.com/spring-projects/spring-kafka [PACKAGE]
- https://spring.io/security/cve-2026-41726 [WEB]