Auth bypass in Red Hat Advanced Cluster Management For Kubernetes 2
CVE-2026-71467
A flaw was found in search-v2-api. The authentication middleware in the affected component unconditionally skips authentication when a request includes an `Upgrade: websocket` header. An unauthenticated attacker can exploit this by sending a specially crafted HTTP POST request to the `/federated` endpoint with the `Upgrade: websocket` header. This allows the attacker to bypass authentication and access federated search results across all configured remote managed hubs, leading to information disclosure.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.008 (55.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.008 · change: +0.004
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-71467 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- access.redhat.com/errata/RHSA-2026:60386 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-71467?
- CVE-2026-71467 is a high-severity vulnerability in Red Hat Advanced Cluster Management For Kubernetes 2, classified under Improper Authentication. CVSS score: 7.5/10. Published 2026-08-11.
- How severe is CVE-2026-71467?
- High severity. CVSS v3 base score is 7.5 out of 10.