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PatchSiren cyber security CVE debrief

CVE-2026-45291 CloudburstMC CVE debrief

A vulnerability in Cloudburst Network versions prior to `1.0.0.CR3-20260418.124334-32` allows an attacker to exploit a bug in Network to close the parent netty channel, rendering it inoperable. This issue has a CVSS score of 7.5 and is classified as HIGH severity. All consumers of the library should upgrade to at least version `1.0.0.CR3-20260418.124334-32`.

Vendor
CloudburstMC
Product
Network
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-05
Original CVE updated
2026-06-05
Advisory published
2026-06-05
Advisory updated
2026-06-05

Who should care

Users of Cloudburst Network versions prior to `1.0.0.CR3-20260418.124334-32` should be aware of this vulnerability and take action to upgrade to a fixed version.

Technical summary

The vulnerability is caused by a bug in the Cloudburst Network library. An attacker can exploit this bug to close the parent netty channel, rendering it inoperable. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Defensive priority

HIGH

Recommended defensive actions

  • Upgrade to at least version `1.0.0.CR3-20260418.124334-32` of the Cloudburst Network library.

Evidence notes

The CVE record for this vulnerability can be found at [cve-org]. The NVD detail for this vulnerability can be found at [nvd]. The source item URL for this vulnerability can be found at [source-item]. The source reference for this vulnerability can be found at [ref-4].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-45291 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-45291

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

  • CVE-2026-45291 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-45291

    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.