CVE-2026-41732: Spring for Apache Pulsar: JsonPulsarHeaderMapper Trusted-Package Prefix Check Allows Unintended Subpackage Deserialization

June 10, 2026 (updated August 12, 2026)

JsonPulsarHeaderMapper matched type headers against trusted packages using a prefix check, meaning that trusting any package implicitly trusted all of its subpackages. Additionally, an empty trusted-packages configuration fell back to trusting all packages rather than applying a safe default allow-list.

Affected versions: Spring for Apache Pulsar 2.0.0 through 2.0.5; 1.2.0 through 1.2.17; 1.1.0 through 1.1.17.

References

github.com/advisories/GHSA-gg69-9wwp-6jx2
github.com/spring-projects/spring-pulsar/releases/tag/v1.2.18
github.com/spring-projects/spring-pulsar/releases/tag/v2.0.6
nvd.nist.gov/vuln/detail/CVE-2026-41732
spring.io/security/cve-2026-41732

Code Behaviors & Features

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