CVE-2026-83589
Medium
Description
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.
SeverityMedium
CVSS6.1
Exploit probability—
ProductOpenshift 4.12
PublishedOct 1, 2026
First seenOct 1, 2026
Weakness typeCWE-601Open redirect
How to fix
Vendor advisories
- access.redhat.com/errata/RHSA-2026:74380
- access.redhat.com/errata/RHSA-2026:74383
- access.redhat.com/errata/RHSA-2026:74429
- access.redhat.com/errata/RHSA-2026:79039
- access.redhat.com/errata/RHSA-2026:79169
- access.redhat.com/errata/RHSA-2026:82785
- access.redhat.com/errata/RHSA-2026:82813
- access.redhat.com/errata/RHSA-2026:89715
- access.redhat.com/errata/RHSA-2026:90274
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openshift 4.12 | No range specified | — |
| openshift 4.14 | No range specified | — |
| openshift 4.15 | No range specified | — |
| openshift 4.16 | No range specified | — |
| openshift 4.18 | No range specified | — |
| openshift 4.19 | No range specified | — |
| openshift 4.20 | No range specified | — |
| openshift 4.21 | No range specified | — |
| openshift 4.22 | No range specified | — |
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