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CVE record · CVE-2026-49332

Openshift/oauth-proxy: openshift/oauth-proxy: underscore header smuggling enables identity impersonation on wsgi/php upstreams

CVSS 8.5 HighEPSS 0.0053 · 45th percentile

Published by the CVE Program (CNA: redhat) at 28 Jul 2026, 12:18 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 1786458704 to before * rpm
Other versions: affected
Red Hat Red Hat OpenShift Container Platform 4.13 Package name: openshift4/ose-oauth-proxy https://catalog.redhat.com/software/containers/
  • unaffected 1786477436 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 1785549818 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 1787054100 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 1785544039 to before * rpm
Other versions: affected
Red Hat Red Hat OpenShift Container Platform 4.17 Package name: openshift4/ose-oauth-proxy-rhel9 https://catalog.redhat.com/software/containers/
  • unaffected 1787543313 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 1785529735 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 1785521728 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 1785833742 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 1785851359 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 1785885351 to before * rpm
Other versions: affected
Identifiers
CVE-2026-49332
CNA
redhat
Weakness (CWE)
CWE-436
Tags
Published
28 Jul 2026
Updated
21 Sept 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
8.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N CNA (redhat)
  • CISA KEV Not listed.
  • EPSS 0.0053, the 45th 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 28 Jul 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.