CVE-2026-41731: Red Hat Fuse

High severity, CVSS 8.1. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Red Hat Fuse: version 7.0.0 only
• Red Hat JBoss Enterprise Application Platform Expansion Pack: affected versions not specified
• VMware Spring For Apache Kafka: from 2.8.0, before 2.8.12 (fixed in 2.8.12); from 2.9.0, before 2.9.14 (fixed in 2.9.14); from 3.2.0, before 3.2.14 (fixed in 3.2.14); from 3.3.0, before 3.3.15.1 (fixed in 3.3.15.1); from 4.0.0, before 4.0.5.1 (fixed in 4.0.5.1)

Published 2026-06-10. Last modified 2026-08-05.