CVE-2026-83589Oauth-proxy: open redirect via /\ and /\t bypass in post-login redirect
Updated under an hour ago ()
Does this affect you?
It affects Red Hat OpenShift Container Platform 4.18. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-601
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Red Hat Red Hat OpenShift Container Platform 4.18 redhat:openshift | from 1790882320 not affected | CNA record |
References
- https://access.redhat.com/errata/RHSA-2026:74380vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:74383vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:74429vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:79039vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:79169vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-83589vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2518379issue-tracking, x-refsource-redhat
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.