CVE-2026-23538: Feast Feature Server

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

A vulnerability was identified in the Feast Feature Server's `/ws/chat` endpoint that allows remote attackers to establish persistent WebSocket connections without any authentication. By opening a large number of simultaneous connections, an attacker can exhaust server resources—such as memory, CPU, and file descriptors—leading to a complete denial of service for legitimate users.

Affected products

• Feast Feast Feature Server: before 0.59.0 (fixed in 0.59.0)
• Red Hat Red Hat Openshift Ai Rhoai

Published 2026-07-16. Last modified 2026-07-16.