---
cve: "CVE-2026-64623"
severity: "HIGH"
cvss: 8.8
epss: "20%"
vendor: "Jovancoding"
kev: false
exploited: false
published: "2026-07-20 12:19:47"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T20:47:15+02:00"
---

# CVE-2026-64623

> 8.8 HIGH · 🧪 PoC

## Beschreibung

Network-AI before 5.13.4 contains an improper cryptographic signature verification vulnerability in APSAdapter where the default local verifier accepts any non-empty string as valid. Unauthenticated attackers can submit forged APS delegation payloads with arbitrary scopes to bypass signature verification and obtain signed permission-grant tokens for sensitive resources including SHELL_EXEC.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 56791e2125423768b5948b4efe1f62b646820e11 (Commit)

## Referenzen

- <https://github.com/Jovancoding/Network-AI/security/advisories/GHSA-3jf7-33vc-hgf4>
- <https://www.vulncheck.com/advisories/network-ai-before-cryptographic-signature-verification-bypass>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-64623) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_