6.5

CVE-2026-41726: spring spring for apache kafka

CVSS: 6.5v3.1MediumAnalyzed
AliasesGHSA-xvfq-4q6q-gxx7
Published 09-06-2026Last modified 27-06-2026
Open JSON

Vulnerability summary

CVE-2026-41726 is a medium (CVSS 6.5) vulnerability in spring spring for apache kafka. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 34.9% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.42%
0%100%
Low · +0.12 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-06-2026
    PublishedVulnerability first disclosed.
  2. 27-06-2026
    Last modifiedVulnerability information updated.

Description

When an application opts into DelegatingDeserializer, a producer can grow the consumer's heap without bound by sending records with unique random spring.kafka.serialization.selector header values, eventually causing GC thrash and OutOfMemoryError. 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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.42%

Chance of exploitation in the next 30 days

Percentile

35%

Versus all other CVEs

30-day change

+0.12 pp

From 0.30% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.42%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Org.springframework.kafka1 product
  • spring-kafka≥ 4.0.0, < 4.0.6 | ≥ 3.3.0, < 3.3.16 | ≥ 3.2.0, ≤ 3.2.13 | ≥ 2.9.0, ≤ 2.9.13 | ≤ 2.8.11
Spring1 product
  • spring for apache kafka≥ 4.0.0, < 4.0.5.1 | ≥ 3.3.0, < 3.3.15.1 | ≥ 3.2.0, < 3.2.14 | ≥ 2.9.0, < 2.9.14 | ≥ 2.8.0, < 2.8.12
Vmware1 product
  • spring_for_apache_kafka< 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

3 vendors · 3 products

References

5 links