CVE-2026-41727
In Spring for Apache Kafka, forged retry topic headers subvert retry routing and backoff behavior
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.
INFO
Published Date :
June 10, 2026, 12:16 a.m.
Last Modified :
July 23, 2026, 9:10 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | dcf2e128-44bd-42ed-91e8-88f912c1401d | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Spring Kafka to a fixed version.
- Validate user-controlled header values.
- Ensure retry topic logic is robust.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-41727.
| URL | Resource |
|---|---|
| https://spring.io/security/cve-2026-41727 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-41727 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-41727
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-41727 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-41727 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 23, 2026
Action Type Old Value New Value Added Translation Title: Spring for Apache Kafka de Spring, Description: La infraestructura de temas de reintento de Spring Kafka no validaba suficientemente los valores de encabezado controlados por el usuario antes de actuar sobre ellos. Un productor podría enviar un registro con un encabezado retry_topic-attempts manipulado para proporcionar un recuento de intentos fuera de rango y hacer que el router del tema de reintento identifique erróneamente dónde estaba el mensaje en la secuencia de reintento. Versiones afectadas: Spring for Apache Kafka 4.0.0 hasta 4.0.5; 3.3.0 hasta 3.3.15; 3.2.0 hasta 3.2.13; 2.9.0 hasta 2.9.13; 2.8.0 hasta 2.8.11. -
Modified Analysis by [email protected]
Jul. 17, 2026
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:* versions from (including) 2.8.0 up to (including) 2.8.11 *cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:* versions from (including) 2.9.0 up to (including) 2.9.13 *cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:* versions from (including) 3.2.0 up to (including) 3.2.13 *cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:* versions from (including) 3.3.0 up to (including) 3.3.15 *cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:* versions from (including) 4.0.0 up to (including) 4.0.5 OR *cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:* versions from (including) 2.9.0 up to (excluding) 2.9.14 *cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:* versions from (including) 3.2.0 up to (excluding) 3.2.14 *cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:* versions from (including) 3.3.0 up to (excluding) 3.3.15.1 *cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:* versions from (including) 4.0.0 up to (excluding) 4.0.5.1 *cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:* versions from (including) 2.8.0 up to (excluding) 2.8.12 -
CVE Modified by [email protected]
Jun. 27, 2026
Action Type Old Value New Value Changed Affected [{'vendor': 'Spring', 'product': 'Spring for Apache Kafka', 'versions': [{'status': 'affected', 'version': '4.0.0', 'lessThan': '4.0.6', 'versionType': 'custom'}, {'status': 'affected', 'version': '3.3.0', 'lessThan': '3.3.16', 'versionType': 'custom'}, {'status': 'affected', 'version': '3.2.0', 'lessThan': '3.2.14', 'versionType': 'custom'}, {'status': 'affected', 'version': '2.9.0', 'lessThan': '2.9.14', 'versionType': 'custom'}, {'status': 'affected', 'version': '2.8.0', 'lessThan': '2.8.12', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}] [{'vendor': 'Spring', 'product': 'Spring for Apache Kafka', 'versions': [{'status': 'affected', 'version': '4.0.0', 'lessThan': '4.0.5.1', 'versionType': 'custom'}, {'status': 'affected', 'version': '3.3.0', 'lessThan': '3.3.15.1', 'versionType': 'custom'}, {'status': 'affected', 'version': '3.2.0', 'lessThan': '3.2.14', 'versionType': 'custom'}, {'status': 'affected', 'version': '2.9.0', 'lessThan': '2.9.14', 'versionType': 'custom'}, {'status': 'affected', 'version': '2.8.0', 'lessThan': '2.8.12', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}] -
Reanalysis by [email protected]
Jun. 22, 2026
Action Type Old Value New Value Changed Reference Type VMware: https://spring.io/security/cve-2026-41727 Types: Third Party Advisory VMware: https://spring.io/security/cve-2026-41727 Types: Vendor Advisory -
Initial Analysis by [email protected]
Jun. 22, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:* versions from (including) 2.8.0 up to (including) 2.8.11 *cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:* versions from (including) 2.9.0 up to (including) 2.9.13 *cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:* versions from (including) 3.2.0 up to (including) 3.2.13 *cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:* versions from (including) 3.3.0 up to (including) 3.3.15 *cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:* versions from (including) 4.0.0 up to (including) 4.0.5 Added Reference Type VMware: https://spring.io/security/cve-2026-41727 Types: Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-41727', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-10T17:33:57.867244Z'} -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Spring', 'product': 'Spring for Apache Kafka', 'versions': [{'status': 'affected', 'version': '4.0.0', 'lessThan': '4.0.6', 'versionType': 'custom'}, {'status': 'affected', 'version': '3.3.0', 'lessThan': '3.3.16', 'versionType': 'custom'}, {'status': 'affected', 'version': '3.2.0', 'lessThan': '3.2.14', 'versionType': 'custom'}, {'status': 'affected', 'version': '2.9.0', 'lessThan': '2.9.14', 'versionType': 'custom'}, {'status': 'affected', 'version': '2.8.0', 'lessThan': '2.8.12', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}] -
New CVE Received by [email protected]
Jun. 10, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-20 Added Reference https://spring.io/security/cve-2026-41727