CVE-2026-45290 Cloudburst Network has DoS in RakNet connection handling due to missing bound checks
An attacker can cause a denial of service by stalling the netty event loop in Cloudburst Network library due to missing bound checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-45290?
CVE-2026-45290 is a high-severity denial of service vulnerability in CloudburstMC Network, published on 5 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-770
Which versions are affected by CVE-2026-45290?
How do I fix CVE-2026-45290?
No fix has been published for CVE-2026-45290 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-45290 being exploited?
There is no known exploitation of CVE-2026-45290 in the wild and no public exploit code.