---
cve: "CVE-2026-63735"
severity: "HIGH"
cvss: 8.6
epss: "0.4%"
vendor: "surrealdb"
kev: false
exploited: false
published: "2026-07-20 12:04:31"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-09T09:27:37+02:00"
---

# CVE-2026-63735

> 8.6 HIGH · 🧪 PoC

## Beschreibung

SurrealDB versions before 3.2.0 fail to validate namespace and database scope in custom API routes, allowing authenticated users to invoke endpoints in different namespaces/databases. Attackers with valid credentials for any namespace/database can access custom API endpoints in other tenants by specifying the target scope in the URL path, reading sensitive data or triggering unintended operations.

## 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:H/VI:H/VA:N/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 |

## Referenzen

- <https://github.com/surrealdb/surrealdb/security/advisories/GHSA-848m-r628-vrxw>
- <https://www.vulncheck.com/advisories/surrealdb-before-authentication-bypass-via-custom-api>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-63735/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_