v4.0.7

🐞 Bug Fixes

• CVE-2026-59317: Harden retry_topic-original-timestamp and backoff timestamp header … #4573
• CVE-2026-59278: Normalize and restrict certain java.net types in header type mapping #4572
• CommonDelegatingErrorHandler does not delegate onPartitionsAssigned(), causing silent record loss during retry #4561
• KafkaTemplate send overloads expose incorrect nullability for partition and key #4532
• Suspend @KafkaListener with two failing records on the same partition skips one of them entirely (never retried, never recovered) #4515

📔 Documentation

• Update Topic Partition Assignment anchor #4539

🔨 Dependency Upgrades

• Upgrade spring-data-bom to 2025.1.7 #4571
• Bump log4jVersion from 2.25.4 to 2.25.5 #4529

❤️ Contributors

Thank you to all the contributors who worked on this release:

@BK202503 and @cppwfs