---
cve: "CVE-2026-103758"
severity: "HIGH"
cvss: 8.6
epss: ""
vendor: "obot-platform"
kev: false
exploited: false
published: "2026-10-01 11:17:26"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-05T21:18:03+02:00"
---

# CVE-2026-103758

> 8.6 HIGH · 🧪 PoC

## Beschreibung

Obot 0.21.1 through 0.24.1 contains an authorization bypass vulnerability that allows authenticated users to reach MCP servers because the checkUI deny list omits the /mcp-connect-composite/ route. Basic-role users with a composite MCP ID can proxy requests through mcpGateway.Proxy to invoke tools on MCP servers restricted by Access Control Rules.

## CNA-Record (Kanon, cvelistV5)

- CNA: **VulnCheck**
- State: PUBLISHED
- Stand: 2026-10-01 14:35:10
- CNA-CVSS: **8.6** (`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`)

## CISA-Anreicherung (vulnrichment/ADP)

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

## 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 |

## Patch verfügbar (OSV)

- 9903b2d1861952a06b3cc9d0a37b08f23e237f86 (Commit)

## Referenzen

- <https://github.com/obot-platform/obot/security/advisories/GHSA-6fwv-3h4c-37j9>
- <https://www.vulncheck.com/advisories/obot-0.21.1-through-0.24.1-authorization-bypass-via-mcp-connect-composite-route>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-103758) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_