In Spring for Apache Pulsar, overly broad trusted-package matching in header mapper exposes JDK classes to deserialization
CVE-2026-41732

8.1HIGH

Key Information:

Vendor

Spring

Status
Spring For Apache Pulsar
Vendor
CVE Published:
9 June 2026

What is CVE-2026-41732?

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.

Affected Version(s)

Spring for Apache Pulsar 2.0.0 < 2.0.6

Spring for Apache Pulsar 1.2.0 < 1.2.18

Spring for Apache Pulsar 1.1.0 < 1.1.18

References

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

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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