CVE-2026-41727 — In Spring for Apache Kafka, forged retry topic headers subvert retry routing and backoff behavior

Description (CNA)

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 (CNA)

Vendor / product	Versions
Spring / Spring for Apache Kafka	affected 4.0.0 before 4.0.5.1; affected 3.3.0 before 3.3.15.1; affected 3.2.0 before 3.2.14; affected 2.9.0 before 2.9.14; affected 2.8.0 before 2.8.12

CWE

CWE-20

References

https://spring.io/security/cve-2026-41727

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.