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Vulnerability · Published Jul 16, 2026 · Assigned by redhat

CVE-2026-23538Feast: resource exhaustion via websocket endpoint

High 7.5

In plain English

A high-severity resource allocation without limits in Feast Feature Server from Feast. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.9%top 40.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
Feast Feast Feature Server 0 – before 0.59.0
Red Hat Red Hat OpenShift AI (RHOAI) see references
Red Hat Red Hat OpenShift AI (RHOAI) see references
Red Hat Red Hat OpenShift AI (RHOAI) see references
Red Hat Red Hat OpenShift AI (RHOAI) see references
Red Hat Red Hat OpenShift AI (RHOAI) see references
Red Hat Red Hat OpenShift AI (RHOAI) see references
Red Hat Red Hat OpenShift AI (RHOAI) see references
Red Hat Red Hat OpenShift AI (RHOAI) see references
Red Hat Red Hat OpenShift AI (RHOAI) see references
Red Hat Red Hat OpenShift AI (RHOAI) see references
Red Hat Red Hat OpenShift AI (RHOAI) see references
Red Hat Red Hat OpenShift AI (RHOAI) see references
Red Hat Red Hat OpenShift AI (RHOAI) see references
Red Hat Red Hat OpenShift AI (RHOAI) see references

Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References