CVE-2026-41726 MEDIUM

CVE-2026-41726: In Spring for Apache Kafka, unbounded delegate cache keyed on user-controlled, potentially malicious selector header

Vendor Spring
Product Spring for Apache Kafka
Weakness CWE-770 · Uncontrolled resource consumption
Published June 9, 2026
Last update June 10, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

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.

Key dates

Disclosure timeline

June 9, 2026 CVE published
June 10, 2026 Record updated