CVE-2026-41727
In Spring for Apache Kafka, forged retry topic headers subvert retry routing and backoff behavior
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-20 |
| Vendor | spring |
| Product | spring for apache kafka |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Jun 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Spring / Spring for Apache Kafka
4.0.0 < 4.0.6 3.3.0 < 3.3.16 3.2.0 < 3.2.14 2.9.0 < 2.9.14 2.8.0 < 2.8.12