Auth bypass in Red Hat Openshift Ai 2.25
CVE-2026-18947
A flaw was found in Feast. An authorization bypass vulnerability exists in the /materialize and /materialize-incremental endpoints. By sending a specially crafted request that omits the feature_views field, an attacker can bypass intended permission checks. This allows an unauthenticated remote attacker, or any authenticated user, to trigger a full re-materialization of all feature views. The consequence is a Denial of Service (DoS) due to data corruption and significant resource consumption across all tenants.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L.
EPSS exploit prediction
EPSS: 0.006 (46.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002
Affected products
- Red Hat Openshift Ai 2.25 — versions 1786110051
- Red Hat Openshift Ai 3.3 — versions 1786110033
- Red Hat Openshift Ai (Rhoai)
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-18947 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- access.redhat.com/errata/RHSA-2026:53263 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:53261 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-18947?
- CVE-2026-18947 is a high-severity vulnerability in Red Hat Openshift Ai 2.25, classified under Missing Authorization. CVSS score: 8.5/10. Published 2026-08-10.
- How severe is CVE-2026-18947?
- High severity. CVSS v3 base score is 8.5 out of 10.