8.1

CVE-2026-41731: redhat fuse Deserialization of Untrusted Data

CVSS: 8.1v3.1HighAnalyzed
AliasesGHSA-xq69-5h5v-x9x4
Published 09-06-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-41731 is a high (CVSS 8.1) Deserialization of Untrusted Data vulnerability in redhat fuse. EPSS estimates a 0.65% chance of exploitation in the next 30 days, higher than 49.9% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.65%
0%100%
Low · +0.14 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. 05-08-2026
    Last modifiedVulnerability information updated.

Description

JsonKafkaHeaderMapper and the deprecated DefaultKafkaHeaderMapper matched type headers against trusted packages using a prefix check, meaning that trusting any package implicitly trusted all of its subpackages. Combined with Jackson's default bean deserialization, a producer could supply crafted header values that caused the consumer to deserialize arbitrary JDK types. 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

0.65%

Chance of exploitation in the next 30 days

Percentile

50%

Versus all other CVEs

30-day change

+0.14 pp

From 0.51% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.65%

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

Redhat2 products
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≥ 2.8.0, < 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

4 vendors · 5 products

References

6 links