---
cve: "CVE-2026-49332"
severity: "HIGH"
cvss: 8.5
epss: "28%"
vendor: "Red Hat"
kev: false
exploited: false
published: "2026-07-28 13:18:46"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T22:51:36+02:00"
---

# CVE-2026-49332

> 8.5 HIGH

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Keine | good |

## Referenzen

- <https://access.redhat.com/errata/RHSA-2026:50681>
- <https://access.redhat.com/errata/RHSA-2026:50758>
- <https://access.redhat.com/errata/RHSA-2026:51007>
- <https://access.redhat.com/errata/RHSA-2026:51013>
- <https://access.redhat.com/errata/RHSA-2026:51022>
- <https://access.redhat.com/errata/RHSA-2026:51025>
- <https://access.redhat.com/errata/RHSA-2026:51038>
- <https://access.redhat.com/errata/RHSA-2026:54188>
- <https://access.redhat.com/errata/RHSA-2026:54206>
- <https://access.redhat.com/security/cve/CVE-2026-49332>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2483253>
- <https://access.redhat.com/errata/RHSA-2026:56912>
- <https://access.redhat.com/errata/RHSA-2026:60023>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-49332) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_