---
cve: "CVE-2026-56402"
severity: "HIGH"
cvss: 7.1
epss: "21%"
vendor: "nanocoai"
kev: false
exploited: false
published: "2026-06-23 16:17:05"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-15T23:42:35+02:00"
---

# CVE-2026-56402

> 7.1 HIGH · 🧪 PoC

## Beschreibung

NanoClaw before 2.1.17 contains a privilege escalation vulnerability in the handleApprovalsResponse function that fails to verify responder role authorization. Attackers with a valid questionId can approve or reject privileged actions like package installation by submitting approval response payloads without proper role validation.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/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)

- ee7f891698760f21b9e79a850d64c7f633cd95ef (Commit)
- 6227bd1a5b016fb1eb76411bb6681b4c924a51a0 (Commit)

## Referenzen

- <https://github.com/nanocoai/nanoclaw/pull/2478>
- <https://github.com/nanocoai/nanoclaw/commit/6227bd1a5b016fb1eb76411bb6681b4c924a51a0>
- <https://www.vulncheck.com/advisories/nanoclaw-privilege-escalation-via-unverified-approval-response-handler>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-56402) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_