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6.5 Medium

CVE-2026-41727 Spring Kafka's retry topic infrastructure did not sufficiently validate user-controlled header values before acting on…

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 retry_topic-attempts header to supply an out-of-range attempt count and cause the retry topic router to misidentify where the message was in the retry sequence. 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.

Affected products and versions

Product Affected versions Fixed in
Spring For Apache Kafka 4.0 4.0.0 → < 4.0.5.1 4.0.5.1
Spring For Apache Kafka 3.3 3.3.0 → < 3.3.15.1 3.3.15.1
Spring For Apache Kafka 3.2 3.2.0 → < 3.2.14 3.2.14
Spring For Apache Kafka 2.9 2.9.0 → < 2.9.14 2.9.14
Spring For Apache Kafka 2.8 2.8.0 → < 2.8.12 2.8.12

References

Timeline

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Other CVEs of Spring For Apache Kafka

The 6 CVEs of Spring For Apache Kafka →
CVE-2026-59317 DeadLetterPublishingRecovererFactory reads the retry_topic-original-timestamp header from an inbound ConsumerRecord… 6.5 Medium CVE-2026-59278 JsonKafkaHeaderMapper and DefaultKafkaHeaderMapper include java.net in their default trusted packages list 6.5 Medium CVE-2026-41731 JsonKafkaHeaderMapper and the deprecated DefaultKafkaHeaderMapper matched type headers against trusted packages using… 8.1 High CVE-2026-41726 When an application opts into DelegatingDeserializer, a producer can grow the consumer's heap without bound by sending… 6.5 Medium
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