{"id":"CVE-2026-41727","title":"Spring Kafka's retry topic infrastructure did not sufficiently validate user-controlled header values before acting on them","summary":"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 coun…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-20"],"vendor":"vmware","product":"spring_for_apache_kafka","affected":["spring_for_apache_kafka >= 2.8.0, < 2.8.12","spring_for_apache_kafka >= 2.9.0, < 2.9.14","spring_for_apache_kafka >= 3.2.0, < 3.2.14","spring_for_apache_kafka >= 3.3.0, < 3.3.15.1","spring_for_apache_kafka >= 4.0.0, < 4.0.5.1"],"patched":["spring_for_apache_kafka 4.0.5.1"],"published":"2026-06-10","updated":"2026-07-17","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-41727","references":[{"url":"https://spring.io/security/cve-2026-41727","label":"security@vmware.com"}],"tags":["nvd"],"epss":0.0024,"epssPercentile":0.15363,"ingestedAt":"2026-07-17T21:16:24.276Z","slug":"CVE-2026-41727","body":"## Overview\n\nSpring 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.\n\nAffected versions:\nSpring 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.\n\n## Affected\n\n- `spring_for_apache_kafka >= 2.8.0, < 2.8.12`\n- `spring_for_apache_kafka >= 2.9.0, < 2.9.14`\n- `spring_for_apache_kafka >= 3.2.0, < 3.2.14`\n- `spring_for_apache_kafka >= 3.3.0, < 3.3.15.1`\n- `spring_for_apache_kafka >= 4.0.0, < 4.0.5.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `spring_for_apache_kafka 4.0.5.1`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}