Cloudburst Network has DoS in RakNet connection handling due to missing bound checks
CVE-2026-45290

7.5HIGH

Key Information:

Vendor

Cloudburstmc

Status
Network
Vendor
CVE Published:
5 June 2026

What is CVE-2026-45290?

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 Version(s)

Network < 1.0.0.CR3-20260417.085727-30

References

https://github.com/CloudburstMC/Network/security/advisori...
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.