CVE-2026-19078: Red Hat Openshift Container Platform 4

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

A flaw was found in the oauth-server component. This open redirect vulnerability occurs when the 'then' parameter in the grant approval handler is not properly validated. A remote attacker can craft a malicious URL that, when approved or denied by an authenticated user, redirects them to an attacker-controlled website. This could enable phishing attacks, potentially tricking users into revealing sensitive information.

Affected products

• Red Hat Red Hat Openshift Container Platform 4

Published 2026-08-11. Last modified 2026-08-14.