How severe is CVE-2026-41727?

CVE-2026-41727 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-41727 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-41727?

CVE-2026-41727 affects Vmware Spring For Apache Kafka. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-41727?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-41727 have an EU (EUVD) identifier?

Yes. CVE-2026-41727 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35904.

When was CVE-2026-41727 published?

CVE-2026-41727 was published on 2026-06-10 and last updated on 2026-06-27.

CVE-2026-41727

CVE-2026-41727 is a medium-severity vulnerability in Vmware Spring For Apache Kafka with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35904
Weakness: CWE-20
Affected product: Vmware Spring For Apache Kafka
Published: 2026-06-10
Last modified: 2026-06-27

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-41727?: CVE-2026-41727 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-41727 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-41727?: CVE-2026-41727 affects Vmware Spring For Apache Kafka. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-41727?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-41727 have an EU (EUVD) identifier?: Yes. CVE-2026-41727 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35904.
When was CVE-2026-41727 published?: CVE-2026-41727 was published on 2026-06-10 and last updated on 2026-06-27.

References

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

Affected products (1)

cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:*

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