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PatchSiren cyber security CVE debrief

CVE-2026-41732 Spring CVE debrief

CVE-2026-41732 is a HIGH severity vulnerability in Spring for Apache Pulsar, with a CVSS score of 8.1. The vulnerability arises from a prefix check in JsonPulsarHeaderMapper that matched type headers against trusted packages, implicitly trusting all subpackages of a trusted package. Furthermore, an empty trusted-packages configuration would fall back to trusting all packages instead of applying a safe default allow-list. Affected versions include Spring for Apache Pulsar 2.0.0 through 2.0.5, 1.2.0 through 1.2.17, and 1.1.0 through 1.1.17.

Vendor
Spring
Product
Spring for Apache Pulsar
CVSS
HIGH 8.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-07-17
Advisory published
2026-06-10
Advisory updated
2026-07-17

Who should care

Users of Spring for Apache Pulsar versions 2.0.0 through 2.0.5, 1.2.0 through 1.2.17, and 1.1.0 through 1.1.17 should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The JsonPulsarHeaderMapper incorrectly performed a prefix check for trusted packages, leading to potential security risks. This issue has been addressed in the affected versions of Spring for Apache Pulsar.

Defensive priority

HIGH

Recommended defensive actions

  • Upgrade to a non-vulnerable version of Spring for Apache Pulsar.
  • Configure trusted packages explicitly to avoid implicit trust of subpackages.
  • Refer to [ref-4] for detailed security advisories and patches.

Evidence notes

The CVE was published on [cve-org] and additional details can be found on [nvd].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-41732 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-41732

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-41732 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-41732

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.