What is CVE-2026-83589?

CVE-2026-83589 is a medium-severity vulnerability in Red Hat Openshift Container Platform 4, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2026-10-01.

How severe is CVE-2026-83589?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Open Redirect in Red Hat Openshift Container Platform 4

CVE-2026-83589

A flaw was found in oauth-proxy. The application fails to properly validate the destination redirect parameter (`rd`) during post-login redirection. A remote attacker can exploit this vulnerability by enticing a user to follow a specially crafted link, resulting in the user being redirected to an arbitrary external website after authenticating. This open redirect can be leveraged to conduct phishing attacks or credential theft.

Vulnerability class: Open Redirect

Published 2026-10-01 · last modified 2026-10-01.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Red Hat Openshift Container Platform 4

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

access.redhat.com/security/cve/CVE-2026-83589 (vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking)

Frequently asked questions

What is CVE-2026-83589?: CVE-2026-83589 is a medium-severity vulnerability in Red Hat Openshift Container Platform 4, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2026-10-01.
How severe is CVE-2026-83589?: Medium severity. CVSS v3 base score is 6.1 out of 10.