CVE-2026-45291

Cloudburst Network erroneously handles invalid connections

CVSS 7.5 HIGHEPSS 0.3%CWE-20

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.5EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

05 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Cloudburst Network provides network components used within Cloudburst projects. A vulnerability in versions prior to `1.0.0.CR3-20260418.124334-32` impacts publicly accessible software depending on the affected versions of Network and allows an attacker to exploit a bug in Network to close the parent netty channel, rendering it inoperable. All consumers of the library should upgrade to at least version `1.0.0.CR3-20260418.124334-32`. There are no known workarounds beyond updating the library.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

CloudburstMC · Network

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References

https://github.com/CloudburstMC/Network/security/advisories/GHSA-rh6x-g5c8-2rmf