CVE-2026-41731
HIGHIn Spring for Apache Kafka, overly broad trusted-package matching in header mappers exposes JDK classes to deserialization
Title source: cnaDescription
JsonKafkaHeaderMapper and the deprecated DefaultKafkaHeaderMapper matched type headers against trusted packages using a prefix check, meaning that trusting any package implicitly trusted all of its subpackages. Combined with Jackson's default bean deserialization, a producer could supply crafted header values that caused the consumer to deserialize arbitrary JDK types. 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
Core References
Scores
CVSS v3
8.1
EPSS
0.0032
EPSS Percentile
23.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-502
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