Is CVE-2026-23538 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-23538?

CVE-2026-23538 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-23538

Description

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.