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Medium

Oauth-proxy: open redirect via /\ and /\t bypass in post-login redirect

Type: advisorySource: Official CVE List1 source record

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.

Announced Group revision 1
Original source ↗

CVE-2026-83589

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-83589

Red Hat OpenShift Container Platform 4.14

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Red Hat OpenShift Container Platform 4.15

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Red Hat OpenShift Container Platform 4.18

Source reference: /containers/cna/affected/2/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Red Hat OpenShift Container Platform 4.19

Source reference: /containers/cna/affected/3/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Red Hat OpenShift Container Platform 4.20

Source reference: /containers/cna/affected/4/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Red Hat OpenShift Container Platform 4.21

Source reference: /containers/cna/affected/5/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Red Hat OpenShift Container Platform 4.22

Source reference: /containers/cna/affected/6/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "cpes": [
      "cpe:/a:redhat:openshift:4.14::el9"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat OpenShift Container Platform 4.14",
    "versions": [
      {
        "status": "unaffected",
        "version": "1791837363",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "openshift4/ose-oauth-proxy",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:openshift:4.15::el9"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat OpenShift Container Platform 4.15",
    "versions": [
      {
        "status": "unaffected",
        "version": "1791632336",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "openshift4/ose-oauth-proxy-rhel9",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:openshift:4.18::el9"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat OpenShift Container Platform 4.18",
    "versions": [
      {
        "status": "unaffected",
        "version": "1790882320",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "openshift4/ose-oauth-proxy-rhel9",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:openshift:4.19::el9"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat OpenShift Container Platform 4.19",
    "versions": [
      {
        "status": "unaffected",
        "version": "1790807096",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "openshift4/ose-oauth-proxy-rhel9",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:openshift:4.20::el9"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat OpenShift Container Platform 4.20",
    "versions": [
      {
        "status": "unaffected",
        "version": "1790704224",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "openshift4/ose-oauth-proxy-rhel9",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:openshift:4.21::el9"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat OpenShift Container Platform 4.21",
    "versions": [
      {
        "status": "unaffected",
        "version": "1790706478",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "openshift4/ose-oauth-proxy-rhel9",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:openshift:4.22::el9"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat OpenShift Container Platform 4.22",
    "versions": [
      {
        "status": "unaffected",
        "version": "1790724885",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "packageName": "openshift4/ose-oauth-proxy-rhel9",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-83589

Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Event
#52594 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-83589 · Revision 1Source updated