---
cve: "CVE-2026-113610"
severity: "MEDIUM"
cvss: 5.3
epss: "0.4%"
vendor: "vatesfr"
kev: false
exploited: false
published: "2026-10-20 16:17:11"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-11-03T13:05:32+01:00"
---

# CVE-2026-113610

> 5.3 MEDIUM · 🧪 PoC

## Beschreibung

Xen Orchestra before 6.9.0 contains an authorization bypass vulnerability in the xo-server user.set API method that allows low-privileged authenticated users to modify other users' preferences by supplying an arbitrary target user id. Attackers can delete the preferences.otp TOTP secret to disable two-factor authentication, corrupt it to block logins, or overwrite stored xsCredentials and sshKeys.

## CNA-Record (Kanon, cvelistV5)

- CNA: **VulnCheck**
- State: PUBLISHED
- Stand: 2026-10-20 18:19:50
- CNA-CVSS: **5.3** (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## 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)

- 3dbf8738f1e682b96ade2074dc84bee02a0c2d48

## Referenzen

- <https://github.com/vatesfr/xen-orchestra/security/advisories/GHSA-mc4m-hc98-rhmv>
- <https://github.com/vatesfr/xen-orchestra/commit/3dbf8738f1e682b96ade2074dc84bee02a0c2d48>
- <https://github.com/vatesfr/xen-orchestra/blob/f187b7931988e3e5c9ccd58abe730d6b006cc246/packages/xo-server/src/api/user.mjs#L73-L93>
- <https://www.vulncheck.com/advisories/xen-orchestra-before-6.9.0-authorization-bypass-via-user-set-api>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-113610/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_