CVE-2026-59278: medium-severity vulnerability in Spring for Apache Kafka
In Spring for Apache Kafka, SSRF via DNS resolution triggered by untrusted java.net types in header mapper default trusted packages
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.3%
JsonKafkaHeaderMapper and DefaultKafkaHeaderMapper include java.net in their default trusted packages list. When these mappers are used — which is the default configuration for all @KafkaListener consumers — an external Kafka producer can inject a java.net.InetAddress type via the spring_json_header_types message header.
Spring for Apache Kafka 4.1.0
Spring for Apache Kafka 4.0.0 - 4.0.6
Spring for Apache Kafka 3.0.0 - 3.3.16
Spring for Apache Kafka 2.9.0 - 2.9.14
Spring for Apache Kafka 2.8.12 and earlier
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected products
Spring · Spring for Apache KafkaRelated CVEs — Spring for Apache Kafka
In the same product, most dangerous first.
CVE-2026-41731HIGHIn Spring for Apache Kafka, overly broad trusted-package matching in header mappers exposes JDK classes to deserializationEPSS 0.5%CVE-2026-59317MEDIUMIn Spring for Apache Kafka, missing header validation in DeadLetterPublishingRecovererFactory enables denial of service via a poison-pill loopEPSS 0.4%CVE-2026-41726MEDIUMIn Spring for Apache Kafka, unbounded delegate cache keyed on user-controlled, potentially malicious selector headerEPSS 0.3%CVE-2026-41727MEDIUMIn Spring for Apache Kafka, forged retry topic headers subvert retry routing and backoff behaviorEPSS 0.2%