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Vulnerabilities

Vulnerability · CVE-2026-83589

A flaw was found in oauth-proxy.

Published Oct 1, 2026 · catalog updated Oct 15, 2026 · Red Hat Red Hat OpenShift Container Platform 4.19

Check if you run it

No confirmed exploitation is on record for CVE-2026-83589. EPSS is 0.25%. Act only if a listed version of Red Hat Red Hat OpenShift Container Platform 4.19 is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.25%
Remediation
Advisory link
Affected products
vendor Red Hat Red Hat OpenShift Container Platform 4 · vendor Red Hat Red Hat OpenShift Container Platform 4.19 · vendor Red Hat Red Hat OpenShift Container Platform 4.20 · vendor Red Hat Red Hat OpenShift Container Platform 4.21 · vendor Red Hat Red Hat OpenShift Container Platform 4.22

A flaw was found in oauth-proxy. The application fails to properly validate the destination redirect parameter ( ) 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Red Hat Red Hat OpenShift Container Platform 4version unspecified
  • vendor Red Hat Red Hat OpenShift Container Platform 4.19version unspecified
  • vendor Red Hat Red Hat OpenShift Container Platform 4.20version unspecified
  • vendor Red Hat Red Hat OpenShift Container Platform 4.21version unspecified
  • vendor Red Hat Red Hat OpenShift Container Platform 4.22version unspecified

How to fix CVE-2026-83589

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-83589. EPSS is 0.25%. Act only if a listed version of Red Hat Red Hat OpenShift Container Platform 4.19 is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-601: URL Redirection to Untrusted Site (Open Redirect). EPSS 0.25%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Kubernetes security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 1, 2026 · NIST NVD

    Detected

    A flaw was found in oauth-proxy. The application fails to properly validate the destination redirect parameter ( ) 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

  2. Oct 15, 2026 · NIST NVD

    Updated

    A flaw was found in oauth-proxy. The application fails to properly validate the destination redirect parameter ( ) 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

Sources

  • CIRCL Vulnerability LookupVulnerability recordCVE-2026-83589

    A flaw was found in oauth-proxy. The application fails to properly validate the destination redirect parameter ( ) 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 re

    vulnerability.circl.lu
  • CVE.orgVulnerability recordCVE-2026-83589

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-83589

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-83589

    A flaw was found in oauth-proxy. The application fails to properly validate the destination redirect parameter ( ) 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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.