CVE-2026-41732

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

State: Published
Severity: 8.1 High
Published: Jun 9, 2026
Updated: Jun 27, 2026
Reserved: Apr 22, 2026

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Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	vmware

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
Spring for Apache PulsarSpring	2.0.0 to before 2.0.5.1Affected 1.2.0 to before 1.2.17.1Affected 1.1.0 to before 1.1.18Affected

References

https://spring.io/security/cve-2026-41732

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