When an application opts into DelegatingDeserializer, a producer can grow the consumer's heap without bound by sending records with unique random spring.kafka.serialization.selector header values, eventually causing GC thrash and OutOfMemoryError. 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.
References
History

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

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, '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 When an application opts into DelegatingDeserializer, a producer can grow the consumer's heap without bound by sending records with unique random spring.kafka.serialization.selector header values, eventually causing GC thrash and OutOfMemoryError. 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, unbounded delegate cache keyed on user-controlled, potentially malicious selector header
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: vmware

Published: 2026-06-09T23:48:51.048Z

Updated: 2026-06-10T17:40:20.549Z

Reserved: 2026-04-22T06:21:39.014Z

Link: CVE-2026-41726

cve-icon Vulnrichment

Updated: 2026-06-10T17:40:11.443Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-10T00:16:52.030

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

Link: CVE-2026-41726

cve-icon Redhat

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