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.

Project Subscriptions

Vendors Products
Spring For Apache Kafka Subscribe
Spring For Apache Kafka Subscribe
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Fixes

Solution

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Workaround

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References
History

Wed, 10 Jun 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 10 Jun 2026 11:30:00 +0000

Type Values Removed Values Added
First Time appeared Spring
Spring spring For Apache Kafka
Vmware
Vmware spring For Apache Kafka
Vendors & Products Spring
Spring spring For Apache Kafka
Vmware
Vmware spring For Apache Kafka

Wed, 10 Jun 2026 00:00:00 +0000

Type Values Removed Values Added
Description 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.
Title In Spring for Apache Kafka, overly broad trusted-package matching in header mappers exposes JDK classes to deserialization
Weaknesses CWE-502
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: vmware

Published:

Updated: 2026-06-10T17:18:19.967Z

Reserved: 2026-04-22T06:21:39.015Z

Link: CVE-2026-41731

cve-icon Vulnrichment

Updated: 2026-06-10T17:18:16.919Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-10T00:16:52.597

Modified: 2026-06-10T19:24:04.320

Link: CVE-2026-41731

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-10T11:21:30Z

Weaknesses