CVSS 3.1
8.1 highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2026-41731
High (8.1). EPSS 0.5% chance of exploitation in the next 30 days. Fixed in org.springframework.kafka:spring-kafka 3.3.16, 4.0.6.
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.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 43% of CVEs (scores of 2026-10-31)
- CWE
- CWE-502
- Published
- Modified
- Record from
- the NVD, synced
Affected
- redhat:fuse
- redhat:jboss_enterprise_application_platform_expansion_pack
- vmware:spring_for_apache_kafka
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-xq69-5h5v-x9x4 | Maven | org.springframework.kafka:spring-kafka | >=4.0.0 <4.0.6 | 4.0.6 |
| GHSA-xq69-5h5v-x9x4 | Maven | org.springframework.kafka:spring-kafka | >=3.3.0 <3.3.16 | 3.3.16 |
| GHSA-xq69-5h5v-x9x4 | Maven | org.springframework.kafka:spring-kafka | >=3.2.0 <=3.2.13 | no fix published |
| GHSA-xq69-5h5v-x9x4 | Maven | org.springframework.kafka:spring-kafka | >=2.9.0 <=2.9.13 | no fix published |
| GHSA-xq69-5h5v-x9x4 | Maven | org.springframework.kafka:spring-kafka | <=2.8.11 | no fix published |