---
cve: "CVE-2026-6266"
severity: "HIGH"
cvss: 8.3
epss: "40%"
vendor: "Red Hat"
kev: false
exploited: false
published: "2026-05-04 14:16:35"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T04:54:54+02:00"
---

# CVE-2026-6266

> 8.3 HIGH

## Beschreibung

A flaw was found in the AAP gateway. The user auto-link strategy, introduced in AAP 2.6, automatically links an external Identity Provider (IDP) identity to an existing AAP user account based on email matching without verifying email ownership. This allows a remote attacker to potentially hijack a victim's account or gain unauthorized access to other accounts, including administrative accounts, by manipulating the IDP-provided email.

## CVSS-Vektor

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

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

## Referenzen

- <https://access.redhat.com/errata/RHSA-2026:13508>
- <https://access.redhat.com/errata/RHSA-2026:13512>
- <https://access.redhat.com/errata/RHSA-2026:13545>
- <https://access.redhat.com/security/cve/CVE-2026-6266>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2458142>
- <https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6266.json>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-6266) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_