CVE-2026-41732

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

HIGH

8.1

CVSS Score

Published: June 9, 2026 at 11:49 PM UTC

Updated: July 23, 2026 at 07:32 PM UTC

2 products affected across 2 vendorsSpring for Apache PulsarSpring for Apache Pulsar

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Severity

HIGH8.1

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Spring for Apache Pulsar · VMware

95%

1.1.0 ≤ v < 1.1.181.2.0 ≤ v < 1.2.17.12.0.0 ≤ v < 2.0.6

Affected range stops below 1.1.18, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.2.17.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.0.6, so it looks safe — our inference, not a vendor statement

Spring for Apache Pulsar · Spring

60%

1.1.0 ≤ v < 1.1.181.2.0 ≤ v < 1.2.17.12.0.0 ≤ v < 2.0.5.11.1.0 1.2.0 2.0.0

Affected range stops below 1.1.18, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.2.17.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.0.5.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

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

References (1)

Vendor Advisory

Source: cverecord

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

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHvmware

Attack Vector: NETWORK
Complexity: HIGH
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-502

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