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CVE-2026-41727

In Spring for Apache Kafka, forged retry topic headers subvert retry routing and backoff behavior

Published: Jun 9, 2026Updated: Jul 23, 2026 Sources: CVE List NVDCWE-20
6.5MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 84.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-20

Affected Products

Spring
oss-projectaka spring framework, spring security, spring boot
Spring for Apache Kafka
OSS Libraries
vmware
commercial·USaka vmware inc
spring for apache kafkaLibraryLibrary
OSS Libraries / generic-library

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

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

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