Bug 2487375 (CVE-2026-41731)

Summary:	CVE-2026-41731 spring-kafka: Spring for Apache Kafka: Arbitrary code execution via insecure deserialization of crafted header values
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	anujha, asoldano, bbaranow, bmaxwell, bstansbe, dlofthou, gmalinko, istudens, ivassile, iweiss, janstey, mosmerov, msvehla, nwallace, pdelbell, pesilva, pjindal, pmackay, rstancel, rstepani, thjenkin, vdosoudi
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in the spring-kafka component. A remote attacker, by supplying crafted header values, could exploit a vulnerability in JsonKafkaHeaderMapper and DefaultKafkaHeaderMapper that incorrectly matched type headers against trusted packages. This issue, combined with Jackson's default bean deserialization, could allow the consumer to deserialize arbitrary Java Development Kit (JDK) types. This could lead to arbitrary code execution on the affected system.	Story Points:	---
Clone Of:		Environment:
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-06-10 00:01:45 UTC

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.