CVE-2026-41726

MEDIUM

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

Title source: cna
STIX 2.1

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.

References (1)

Core 1

Scores

CVSS v3 6.5
EPSS 0.0029
EPSS Percentile 20.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-770
Status published
Products (10)
org.springframework.kafka/spring-kafka 0 - 2.8.11Maven
org.springframework.kafka/spring-kafka 2.9.0 - 2.9.13Maven
org.springframework.kafka/spring-kafka 3.2.0 - 3.2.13Maven
org.springframework.kafka/spring-kafka 3.3.0 - 3.3.16Maven
org.springframework.kafka/spring-kafka 4.0.0 - 4.0.6Maven
Spring/Spring for Apache Kafka 2.8.0 - 2.8.12
Spring/Spring for Apache Kafka 2.9.0 - 2.9.14
Spring/Spring for Apache Kafka 3.2.0 - 3.2.14
Spring/Spring for Apache Kafka 3.3.0 - 3.3.16
Spring/Spring for Apache Kafka 4.0.0 - 4.0.6
Published Jun 10, 2026
Tracked Since Jun 10, 2026