8.5

CVE-2026-49332

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4.12
Default Statusaffected
Version 1786458704
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4.13
Default Statusaffected
Version 1786477436
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4.14
Default Statusaffected
Version 1785549818
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4.16
Default Statusaffected
Version 1785544039
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4.18
Default Statusaffected
Version 1785529735
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4.19
Default Statusaffected
Version 1785521728
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4.20
Default Statusaffected
Version 1785833742
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4.21
Default Statusaffected
Version 1785851359
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4.22
Default Statusaffected
Version 1785885351
Version < *
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.28% 0.206
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
RedHat 8.5 3.1 4.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CWE-436 Interpretation Conflict

Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state.

https://access.redhat.com/security/cve/CVE-2026-49332
https://bugzilla.redhat.com/show_bug.cgi?id=2483253
https://access.redhat.com/errata/RHSA-2026:51025
https://access.redhat.com/errata/RHSA-2026:51022
https://access.redhat.com/errata/RHSA-2026:51038
https://access.redhat.com/errata/RHSA-2026:51007
https://access.redhat.com/errata/RHSA-2026:51013
https://access.redhat.com/errata/RHSA-2026:50681
https://access.redhat.com/errata/RHSA-2026:50758
https://access.redhat.com/errata/RHSA-2026:54206
https://access.redhat.com/errata/RHSA-2026:54188