CVE-2026-41727 Details
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.
A vulnerability exists in Spring for Apache Kafka's retry topic mechanism, where user-controlled header values were not properly validated. This flaw allows producers to send records with manipulated `retry_topic-attempts` headers, introducing an out-of-range attempt count that disrupts the message's retry sequence. Additionally, the `retry_topic_backoff-timestamp` header could be forged to impose excessively long delays, causing listeners to pause far beyond the intended retry period. Affected versions include 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, and 2.8.0 through 2.8.11.
Users should upgrade to Spring for Apache Kafka 4.0.6, 3.3.16, 3.2.14, 2.9.14, or 2.8.12. Instructions for upgrading to the commercial versions are available on the Spring Enterprise website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 10, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://spring.io/security/cve-2026-41727 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-20 | Improper Input Validation | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| vmware spring for apache kafka | >= 2.8.0, < 2.8.12 >= 2.9.0, < 2.9.14 >= 3.2.0, < 3.2.14 >= 3.3.0, < 3.3.15.1 >= 4.0.0, < 4.0.5.1 |
CPE
Remediation
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Change History
8 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jul 17, 2026 | Modified Analysis | [email protected] |
| Jun 27, 2026 | CVE Modified | [email protected] |
| Jun 22, 2026 | Reanalysis | [email protected] |
| Jun 22, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 10, 2026 | New CVE Received | [email protected] |