CVE-2026-48779

A flaw was found in ws, an open source WebSocket client and server. A remote attacker can exploit this memory exhaustion vulnerability by sending a high volume of exceptionally small fragments and data chunks. This action forces the affected component to allocate and hold structural wrappers that consume excessive memory. Consequently, this leads to process termination and a denial of service (DoS) for the remote peer.

This is an Important denial of service vulnerability in the ws WebSocket library. A remote attacker can exploit this flaw by sending a high volume of small, fragmented data, leading to excessive memory consumption and subsequent process termination. This can result in service disruption for Red Hat products that utilize ws for WebSocket communication.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.