Spring-Kafka-POC-CVE-2023-34040

Spring Kafka Deserialization POC Requirements Java 11 Maven Docker or Kafka Usage First start up the Dockerized Kafka instance. This will start up Kafka and make it available on port 29092. root@kitploit: docker-compose up Start up the Consumer application. root@kitploit: cd spring-kafka-consumer...

CVE-2023-34040

CVE-2023-34040 Spring Kafka Deserialization Remote Code Execution root@kitploit: POST /messages/send HTTP/1.1 Host: 127.0.0.1:8899 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 Macintosh; Intel Mac OS X 10157 AppleWebKit/537.36 KHTML, like Gecko Chrome/116.0.0.0...

cve-2023-34040

CVE-2023-34040 Spring Kafka Deserialization Remote Code Execution root@kitploit: POST /messages/send HTTP/1.1 Host: 127.0.0.1:8899 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 Macintosh; Intel Mac OS X 10157 AppleWebKit/537.36 KHTML, like Gecko Chrome/116.0.0.0...

ROOT-APP-MAVEN-CVE-2026-41731 CVE-2026-41731 in org.springframework.kafka:spring-kafka - Patched by Root

Root has patched CVE-2026-41731 in the org.springframework.kafka:spring-kafka package for Root:Maven. Multiple fixed versions available...

CVE-2023-34040

CVE-2023-34040 This PoC is cloned from https://github.com/Contrast-Security-OSS/Spring-Kafka-POC-CVE-2023-34040 About our analyzing process, please visit PDF file on the main repo...

CVE-2026-59317

DeadLetterPublishingRecovererFactory reads the retrytopic-original-timestamp header from an inbound ConsumerRecord and passes its raw bytes directly to new BigIntegerheader.value with no length or format validation. Spring for Apache Kafka 4.1.0 Spring for Apache Kafka 4.0.0 - 4.0.6 Spring for...

CVE-2026-59317 In Spring for Apache Kafka, missing header validation in DeadLetterPublishingRecovererFactory enables denial of service via a poison-pill loop

DeadLetterPublishingRecovererFactory reads the retrytopic-original-timestamp header from an inbound ConsumerRecord and passes its raw bytes directly to new BigIntegerheader.value with no length or format validation. Spring for Apache Kafka 4.1.0 Spring for Apache Kafka 4.0.0 - 4.0.6 Spring for...

CVE-2026-59317 In Spring for Apache Kafka, missing header validation in DeadLetterPublishingRecovererFactory enables denial of service via a poison-pill loop

DeadLetterPublishingRecovererFactory reads the retrytopic-original-timestamp header from an inbound ConsumerRecord and passes its raw bytes directly to new BigIntegerheader.value with no length or format validation. Spring for Apache Kafka 4.1.0 Spring for Apache Kafka 4.0.0 - 4.0.6 Spring for...

EUVD-2026-67199

DeadLetterPublishingRecovererFactory reads the retrytopic-original-timestamp header from an inbound ConsumerRecord and passes its raw bytes directly to new BigIntegerheader.value with no length or format validation. Spring for Apache Kafka 4.1.0 Spring for Apache Kafka 4.0.0 - 4.0.6 Spring for...

EUVD-2026-66850

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...

PT-2026-82721

DeadLetterPublishingRecovererFactory reads the retry topic-original-timestamp header from an inbound ConsumerRecord and passes its raw bytes directly to new BigIntegerheader.value with no length or format validation. Spring for Apache Kafka 4.1.0 Spring for Apache Kafka 4.0.0 - 4.0.6 Spring for...

PT-2026-82417

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...

Improper Check for Unusual or Exceptional Conditions

Overview Affected versions of this package are vulnerable to Improper Check for Unusual or Exceptional Conditions via the DeadLetterPublishingRecovererFactory. An attacker can cause repeated failures and stall partition consumption by attaching a malformed retrytopic-original-timestamp header suc...

Deserialization of Untrusted Data

Overview Affected versions of this package are vulnerable to Deserialization of Untrusted Data in the deserialization of the springjsonheadertypes message header by the JsonKafkaHeaderMapper and DefaultKafkaHeaderMapper. An attacker can cause arbitrary DNS resolution requests by injecting a craft...

Improper Validation Of User-Controlled Retry Header Value

Spring Kafka is vulnerable to improper validation of user-controlled retry header value. The vulnerability is due to insufficient validation of the retrytopic-attempts header, which allows an attacker to craft an out-of-range retry attempt count and cause the retry topic router to incorrectly...

K000162184: Spring Kafka vulnerability CVE-2026-41727

Security Advisory Description Spring Kafka's retry topic infrastructure did not sufficiently validate user-controlled header values before acting on them. A producer could send a record with a crafted retrytopic-attempts header to supply an out-of-range attempt count and cause the retry topic...

ROOT-APP-MAVEN-CVE-2026-41726 CVE-2026-41726 in io.root.org.springframework.kafka:spring-kafka - Patched by Root

Root has patched CVE-2026-41726 in the io.root.org.springframework.kafka:spring-kafka package for Root:Maven. Multiple fixed versions available...

K000162065: Spring Framework for Apache Kafka vulnerability CVE-2026-41726

Security Advisory 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:...

CVE-2026-41731

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 be...

Unsafe Deserialization

Spring for Apache Kafka is vulnerable to an unsafe deserialization. The vulnerability is due to improper trusted-package matching in JsonKafkaHeaderMapper and the deprecated DefaultKafkaHeaderMapper, where prefix-based checks implicitly trusted subpackages and, combined with Jackson's default bea...