CVE-2026-45290: Cloudburstmc Network

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Cloudburst Network provides network components used within Cloudburst projects. A vulnerability in versions prior to `1.0.0.CR3-20260417.085727-30` impacts publicly accessible software depending on the affected versions of Network and allows an attacker to exploit a vulnerability in Network to stall the netty event loop, rendering it inoperable. All consumers of the library should upgrade to at least version `1.0.0.CR3-20260417.085727-30`. There are no known workarounds beyond updating the library.

Affected products

• Cloudburstmc Network: before 1.0.0.CR3-20260417.085727-30 (fixed in 1.0.0.CR3-20260417.085727-30)

Published 2026-06-05. Last modified 2026-06-17.