CVE-2026-49332

CVE.org · Published

Record status: Published
Identifier year (not publication year): 2026
Source publication: Jul 28, 2026
Source updated: Sep 21, 2026
Imported by cveboard: Oct 24, 2026
Source snapshot: cve_2026-10-24_midnight_baseline · Oct 24, 2026

CNA source text (English)

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

A flaw was found in openshift/oauth-proxy. The proxy sets authenticated identity headers using only dash-variant keys (X-Forwarded-User) but does not strip underscore-variant keys (X_Forwarded_User) from incoming requests. WSGI and PHP frameworks normalize both variants to the same variable, allowing an authenticated low-privilege user to smuggle a forged identity that may override the legitimate authenticated identity in the upstream application.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Red Hat OpenShift Container Platform 4.12

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4.12
Platforms: Unknown
Default status: affected
Package: openshift4/ose-oauth-proxy
Package collection: https://catalog.redhat.com/software/containers/

Red Hat OpenShift Container Platform 4.12 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
1786458704	`unaffected`	rpm	*	Unavailable	None listed

Red Hat OpenShift Container Platform 4.13

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4.13
Platforms: Unknown
Default status: affected
Package: openshift4/ose-oauth-proxy
Package collection: https://catalog.redhat.com/software/containers/

Red Hat OpenShift Container Platform 4.13 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
1786477436	`unaffected`	rpm	*	Unavailable	None listed

Red Hat OpenShift Container Platform 4.14

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4.14
Platforms: Unknown
Default status: affected
Package: openshift4/ose-oauth-proxy
Package collection: https://catalog.redhat.com/software/containers/

Red Hat OpenShift Container Platform 4.14 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
1785549818	`unaffected`	rpm	*	Unavailable	None listed

Red Hat OpenShift Container Platform 4.15

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4.15
Platforms: Unknown
Default status: affected
Package: openshift4/ose-oauth-proxy-rhel9
Package collection: https://catalog.redhat.com/software/containers/

Red Hat OpenShift Container Platform 4.15 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
1787054100	`unaffected`	rpm	*	Unavailable	None listed

Red Hat OpenShift Container Platform 4.16

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4.16
Platforms: Unknown
Default status: affected
Package: openshift4/ose-oauth-proxy-rhel9
Package collection: https://catalog.redhat.com/software/containers/

Red Hat OpenShift Container Platform 4.16 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
1785544039	`unaffected`	rpm	*	Unavailable	None listed

Red Hat OpenShift Container Platform 4.17

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4.17
Platforms: Unknown
Default status: affected
Package: openshift4/ose-oauth-proxy-rhel9
Package collection: https://catalog.redhat.com/software/containers/

Red Hat OpenShift Container Platform 4.17 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
1787543313	`unaffected`	rpm	*	Unavailable	None listed

Red Hat OpenShift Container Platform 4.18

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4.18
Platforms: Unknown
Default status: affected
Package: openshift4/ose-oauth-proxy-rhel9
Package collection: https://catalog.redhat.com/software/containers/

Red Hat OpenShift Container Platform 4.18 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
1785529735	`unaffected`	rpm	*	Unavailable	None listed

Red Hat OpenShift Container Platform 4.19

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4.19
Platforms: Unknown
Default status: affected
Package: openshift4/ose-oauth-proxy-rhel9
Package collection: https://catalog.redhat.com/software/containers/

Red Hat OpenShift Container Platform 4.19 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
1785521728	`unaffected`	rpm	*	Unavailable	None listed

Red Hat OpenShift Container Platform 4.20

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4.20
Platforms: Unknown
Default status: affected
Package: openshift4/ose-oauth-proxy-rhel9
Package collection: https://catalog.redhat.com/software/containers/

Red Hat OpenShift Container Platform 4.20 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
1785833742	`unaffected`	rpm	*	Unavailable	None listed

Red Hat OpenShift Container Platform 4.21

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4.21
Platforms: Unknown
Default status: affected
Package: openshift4/ose-oauth-proxy-rhel9
Package collection: https://catalog.redhat.com/software/containers/

Red Hat OpenShift Container Platform 4.21 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
1785851359	`unaffected`	rpm	*	Unavailable	None listed

Red Hat OpenShift Container Platform 4.22

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4.22
Platforms: Unknown
Default status: affected
Package: openshift4/ose-oauth-proxy-rhel9
Package collection: https://catalog.redhat.com/software/containers/

Red Hat OpenShift Container Platform 4.22 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
1785885351	`unaffected`	rpm	*	Unavailable	None listed