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Spring Spring for Apache PulsarIn Spring for Apache Pulsar, overly broad trusted-package matching in header mapper exposes JDK classes to deserialization

Risk 75
Severity
8.1
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

First published (updated )
CVE-2026-41732

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