CVE-2026-45290 in Network
Summary
by MITRE • 06/05/2026
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.
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Analysis
by VulDB Data Team • 06/05/2026
The Cloudburst Network library represents a critical component in modern cloud infrastructure deployments where network communication efficiency and reliability are paramount. This vulnerability affects versions prior to the specific release mentioned, indicating a security flaw that has been addressed through subsequent development cycles. The impacted software ecosystem includes various applications and services that depend on the network components provided by Cloudburst, making this a potentially widespread concern across multiple deployment environments. Organizations utilizing older versions of this library face significant operational risks due to the nature of the flaw that affects core network processing capabilities.
The technical implementation of this vulnerability resides within the Netty event loop management system, which serves as the foundation for asynchronous network operations in many high-performance applications. An attacker can exploit this flaw to cause the event loop to stall, effectively halting all network processing activities within the affected application. This type of vulnerability directly impacts the availability and responsiveness of network services, as the event loop is responsible for handling all incoming and outgoing network communications. The stall condition renders the entire network processing capability inoperable, causing cascading failures throughout dependent systems that rely on timely network responses.
From an operational perspective, this vulnerability creates a severe risk to service availability and system stability. When the Netty event loop becomes unresponsive, network services experience complete downtime or significant degradation in performance, impacting user experience and business operations. The vulnerability affects publicly accessible software, meaning that external attackers can exploit this condition without requiring privileged access or complex attack vectors. The impact extends beyond individual applications to entire service ecosystems that depend on reliable network communication, potentially causing widespread disruption across interconnected systems.
The mitigation strategy for this vulnerability is straightforward yet critical for maintaining system integrity. All consumers of the Cloudburst Network library must upgrade to version 1.0.0.CR3-20260417.085727-30 or later to eliminate the risk of exploitation. This upgrade process requires careful planning and testing to ensure compatibility with existing applications and services. Organizations should prioritize this upgrade across all affected environments, particularly those handling critical network traffic. The lack of workarounds beyond updating the library emphasizes the fundamental nature of the flaw, which cannot be bypassed through configuration changes or alternative implementation approaches. This vulnerability aligns with CWE-400, which covers "Uncontrolled Resource Consumption," and potentially maps to ATT&CK technique T1499.004 for "Endpoint Denial of Service" within the context of network service disruption.
The root cause of this vulnerability likely stems from improper handling of network events or resource management within the Netty framework integration. The stall condition suggests that specific network processing operations may not properly release resources or handle timeouts, leading to indefinite blocking of the event loop thread. This type of resource management failure represents a common class of issues in concurrent network programming where improper synchronization or resource cleanup can lead to complete system unresponsiveness. Security practitioners should monitor for similar patterns in other network libraries and frameworks that utilize similar event loop architectures to prevent analogous vulnerabilities from emerging in their own systems.