CVE-2026-40879
Description
A flaw was found in Nest, a framework for building scalable Node.js server-side applications. A remote attacker can exploit this vulnerability by sending numerous small, valid JSON (JavaScript Object Notation) messages within a single TCP (Transmission Control Protocol) frame. This action causes the application's handleData() function to recurse excessively, leading to a call stack overflow and ultimately a Denial of Service (DoS) condition. This can make the application unresponsive to legitimate users.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)
When allocating resources without limits, an attacker could prevent other systems, applications, or processes from accessing the same type of resource. It can be easy for an attacker to consume many resources by rapidly making many requests or causing larger resources to be used than is needed.
Frequently Asked Questions
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