CVE-2026-41731

EUVD-2026-35908
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.1 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 40%
Affected Products (NVD)
VendorProductVersion
vmwarespring_for_apache_kafka
2.8.0 ≤
𝑥
< 2.8.12
vmwarespring_for_apache_kafka
2.9.0 ≤
𝑥
< 2.9.14
vmwarespring_for_apache_kafka
3.2.0 ≤
𝑥
< 3.2.14
vmwarespring_for_apache_kafka
3.3.0 ≤
𝑥
< 3.3.15.1
vmwarespring_for_apache_kafka
4.0.0 ≤
𝑥
< 4.0.5.1
redhatfuse
7.0.0
redhatjboss_enterprise_application_platform_expansion_pack
-
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://spring.io/security/cve-2026-41731
https://access.redhat.com/security/cve/CVE-2026-41731
https://bugzilla.redhat.com/show_bug.cgi?id=2487375
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41731.json