Improper input validation in Spring For Apache Kafka
CVE-2026-41727
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.002 (15.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Spring For Apache Kafka — versions 4.0.0, 3.3.0, 3.2.0
- Vmware Spring_for_apache_kafka
Weakness classification (CWE)
References
- security@vmware.com (Third Party Advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-41727?
- CVE-2026-41727 is a medium-severity vulnerability in Spring For Apache Kafka, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2026-06-10.
- How severe is CVE-2026-41727?
- Medium severity. CVSS v3 base score is 6.5 out of 10.