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CVE-2026-41731

In Spring for Apache Kafka, overly broad trusted-package matching in header mappers exposes JDK classes to deserialization

Published: Jun 9, 2026Updated: Jul 23, 2026 Sources: CVE List NVDCWE-502
8.1HIGH
NVD MITRE
EPSS Score
0.5%
Top 59.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-502

Affected Products

redhat
commercial·USaka red hat
fuseOn-prem
Operating Systems / linux-distro
jboss enterprise application platform expansion packOn-prem
Operating Systems / linux-distro
vmware
commercial·USaka vmware inc
spring for apache kafkaLibraryLibrary
OSS Libraries / generic-library
Spring
oss-projectaka spring framework, spring security, spring boot
Spring for Apache Kafka
OSS Libraries

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

https://spring.io/security/cve-2026-41731
spring.io
https://access.redhat.com/security/cve/CVE-2026-41731
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2487375
bugzilla.redhat.com
and 1 more references View all →
News mentions
1

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