---
cve: "CVE-2026-72666"
severity: "MEDIUM"
cvss: 6.8
epss: "28%"
vendor: "Elastic"
kev: false
exploited: false
published: "2026-08-13 20:17:27"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-05T23:17:51+02:00"
---

# CVE-2026-72666

> 6.8 MEDIUM

## Beschreibung

Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized query execution against Elastic Agents that are assigned to a Kibana space the requesting user has no access to, via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). A user who is authorized to run Osquery live queries in one space can have a query carried out on hosts belonging to another space, resulting in disclosure of information from those hosts to the Osquery results data stream.

## CVSS-Vektor

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

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

## Schwachstellen-Klasse

- **CWE-639** — Authorization Bypass Through User-Controlled Key
  The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

## Patch verfügbar (OSV)

- adc1f04ffdd393d1977990338d5512c5eaf1ce94 (Commit)
- bc80ff828630b51dd591207f43a54ea5ebf53270 (Commit)

## Referenzen

- <https://discuss.elastic.co/t/kibana-9-4-5-security-update-esa-2026-97/389537>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-72666) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_