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CVE-2026-83589

MEDIUMCVSS 6.1/10EPSS 0.28%

Last modified

CVE-2026-83589 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A flaw was found in oauth-proxy. The application fails to properly validate the destination redirect parameter (`rd`) during post-login redirection. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability
0.28%

20.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Red HatRed Hat OpenShift Container Platform 4.12All versions
Red HatRed Hat OpenShift Container Platform 4.14All versions
Red HatRed Hat OpenShift Container Platform 4.15All versions
Red HatRed Hat OpenShift Container Platform 4.16All versions
Red HatRed Hat OpenShift Container Platform 4.18All versions
Red HatRed Hat OpenShift Container Platform 4.19All versions
Red HatRed Hat OpenShift Container Platform 4.20All versions
Red HatRed Hat OpenShift Container Platform 4.21All versions
Red HatRed Hat OpenShift Container Platform 4.22All versions

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is 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.
How severe is CVE-2026-83589?
CVE-2026-83589 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.
How do I fix CVE-2026-83589?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST