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CVE record · CVE-2026-83589

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

CVSS 6.1 MediumEPSS 0.0038 · 32nd percentile

Published by the CVE Program (CNA: redhat) at 1 Oct 2026, 09:17 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Red Hat Red Hat OpenShift Container Platform 4.12 Package name: openshift4/ose-oauth-proxy https://catalog.redhat.com/software/containers/
  • unaffected 1792974337 to before * rpm
Other versions: affected
Red Hat Red Hat OpenShift Container Platform 4.14 Package name: openshift4/ose-oauth-proxy https://catalog.redhat.com/software/containers/
  • unaffected 1791837363 to before * rpm
Other versions: affected
Red Hat Red Hat OpenShift Container Platform 4.15 Package name: openshift4/ose-oauth-proxy-rhel9 https://catalog.redhat.com/software/containers/
  • unaffected 1791632336 to before * rpm
Other versions: affected
Red Hat Red Hat OpenShift Container Platform 4.16 Package name: openshift4/ose-oauth-proxy-rhel9 https://catalog.redhat.com/software/containers/
  • unaffected 1792878232 to before * rpm
Other versions: affected
Red Hat Red Hat OpenShift Container Platform 4.18 Package name: openshift4/ose-oauth-proxy-rhel9 https://catalog.redhat.com/software/containers/
  • unaffected 1790882320 to before * rpm
Other versions: affected
Red Hat Red Hat OpenShift Container Platform 4.19 Package name: openshift4/ose-oauth-proxy-rhel9 https://catalog.redhat.com/software/containers/
  • unaffected 1790807096 to before * rpm
Other versions: affected
Red Hat Red Hat OpenShift Container Platform 4.20 Package name: openshift4/ose-oauth-proxy-rhel9 https://catalog.redhat.com/software/containers/
  • unaffected 1790704224 to before * rpm
Other versions: affected
Red Hat Red Hat OpenShift Container Platform 4.21 Package name: openshift4/ose-oauth-proxy-rhel9 https://catalog.redhat.com/software/containers/
  • unaffected 1790706478 to before * rpm
Other versions: affected
Red Hat Red Hat OpenShift Container Platform 4.22 Package name: openshift4/ose-oauth-proxy-rhel9 https://catalog.redhat.com/software/containers/
  • unaffected 1790724885 to before * rpm
Other versions: affected
Red Hat Red Hat OpenShift Container Platform 5 Package name: openshift5/ose-oauth-proxy-rhel9 https://access.redhat.com/downloads/content/package-browser/ No versions given Other versions: unaffected
Identifiers
CVE-2026-83589
CNA
redhat
Weakness (CWE)
CWE-601
Tags
Published
1 Oct 2026
Updated
30 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.1 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CNA (redhat)
  • CISA KEV Not listed.
  • EPSS 0.0038, the 32nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 1 Oct 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.