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

CVSS 7.5 · High EPSS 0.28% · P20

Possible ATT&CK Techniques 1AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProductVersion RangeStatus
CloudburstMCNetwork< 1.0.0.CR3-20260417.085727-30affected
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I. Basic Information for CVE-2026-45290

Vulnerability Information
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Vulnerability Title
Cloudburst Network has DoS in RakNet connection handling due to missing bound checks
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Cloudburst Network 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cloudburst Network是Cloudburst项目中使用的网络组件。 Cloudburst Network 1.0.0.CR3-20260417.085727-30之前版本存在安全漏洞，该漏洞源于网络组件问题，可能导致攻击者利用漏洞使netty事件循环停滞，使其无法运行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
CloudburstMCNetwork < 1.0.0.CR3-20260417.085727-30 -

II. Public POCs for CVE-2026-45290

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 10844 chars
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III. Intelligence Information for CVE-2026-45290

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Vendor Advisories for CVE-2026-45290 (1)

IV. Related Vulnerabilities

Same product: Network
Same vendor: CloudburstMC
Same weakness: CWE-770

V. Comments for CVE-2026-45290

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