CVE-2026-83589: URL Redirection to Untrusted Site ('Open Redirect') in Red Hat Red Hat OpenShift Container Platform 4.18
Description
A vulnerability in oauth-proxy allows improper validation of the destination redirect parameter after login, enabling an attacker to redirect users to arbitrary external websites. This open redirect flaw can be exploited for phishing or credential theft. Red Hat has issued a security advisory with updates for OpenShift Container Platform 4.20.41 to address this issue.
CVSS v3.1
Score 6.1medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-83589 describes an open redirect vulnerability in oauth-proxy where the application fails to properly validate the 'rd' (redirect) parameter during post-login redirection. An attacker can craft a malicious link that, when followed by a user, causes redirection to an arbitrary external site after authentication. This vulnerability is classified under CWE-601 (Open Redirect). Red Hat's advisory for OpenShift Container Platform 4.20.41 includes fixes for this issue.
Potential Impact
Successful exploitation allows an attacker to redirect authenticated users to arbitrary external websites, potentially facilitating phishing attacks or credential theft. The CVSS 3.1 base score is 6.1 (medium severity) with impact on confidentiality and integrity (partial). There is no indication of denial of service or system compromise.
Mitigation Recommendations
Red Hat has released OpenShift Container Platform 4.20.41 with fixes addressing this vulnerability. Users should upgrade to this version or later as per the official Red Hat advisory. Follow Red Hat's documented upgrade procedures to fully apply the asynchronous errata update. No additional mitigation steps are indicated in the advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-8c7h-7vm9-jhj3
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-83589"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
- State
- PUBLISHED
Patch Information
Threat ID: 6ad077ab2cdf04f6560ee93a
Added to database: 10/15/2026, 06:50:19 UTC
Last enriched: 10/15/2026, 07:03:49 UTC
Last updated: 10/15/2026, 22:06:42 UTC
Views: 17
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