Vulnerability Details CVE-2026-41731
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 23.2%
CVSS Severity
CVSS v3 Score 8.1
References
Products affected by CVE-2026-41731
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.8.0
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.8.1
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.8.10
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.8.11
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.8.2
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.8.3
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.8.4
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.8.5
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.8.6
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.8.7
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.8.8
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.8.9
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.9.0
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.9.1
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.9.10
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.9.11
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.9.12
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.9.13
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.9.2
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.9.3
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.9.4
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.9.5
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.9.6
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.9.7
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.9.8
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cpe:2.3:a:vmware:spring_for_apache_kafka:2.9.9
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.2.0
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.2.1
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.2.10
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.2.13
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.2.2
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.2.3
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.2.4
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.2.5
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.2.6
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.2.7
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.2.8
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.2.9
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.0
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.1
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.10
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.11
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.12
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.13
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.14
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.15
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.2
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.3
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.4
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.5
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.6
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.7
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.8
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cpe:2.3:a:vmware:spring_for_apache_kafka:3.3.9
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cpe:2.3:a:vmware:spring_for_apache_kafka:4.0.0
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cpe:2.3:a:vmware:spring_for_apache_kafka:4.0.1
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cpe:2.3:a:vmware:spring_for_apache_kafka:4.0.2
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cpe:2.3:a:vmware:spring_for_apache_kafka:4.0.3
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cpe:2.3:a:vmware:spring_for_apache_kafka:4.0.4
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cpe:2.3:a:vmware:spring_for_apache_kafka:4.0.5