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High, CVSS 8.1

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

CVE-2026-41732GHSA-gg69-9wwp-6jx2

What to do

Partial vendor fix. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
8.1 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
  • CVE-2026-41732: 0.35% estimated exploitation activity in the next 30 days; percentile 28.37 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

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.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-gg69-9wwp-6jx2

Agent brief

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# Patch Next advisory brief: CVE-2026-41732

Advisory: Spring for Apache Pulsar: JsonPulsarHeaderMapper Trusted-Package Prefix Check Allows Unintended Subpackage Deserialization
IDs: CVE-2026-41732, GHSA-gg69-9wwp-6jx2
Record: https://patchnext.com/advisories/cve-2026-41732 (revision 1, source checked 26 Oct 2026, 16:54 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Partial vendor fix; fixed versions by package: org.springframework.pulsar:spring-pulsar 2.0.6, 1.2.18. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.springframework.pulsar:spring-pulsar: affected >= 2.0.0, <= 2.0.5; >= 1.2.0, <= 1.2.17; <= 1.1.17; fixed in 1.2.18, 2.0.6

## Suggested inspection (read-only)
- Maven org.springframework.pulsar:spring-pulsar: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.springframework.pulsar:spring-pulsar.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-gg69-9wwp-6jx2 (GitHub-reviewed advisory GHSA-gg69-9wwp-6jx2 lists affected ranges: Maven org.springframework.pulsar:spring-pulsar >=2.0.0 =1.2.0 =0 <=1.1.17)

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