---
cve: "CVE-2026-93363"
severity: "MEDIUM"
cvss: 5.3
epss: ""
vendor: "payloadcms"
kev: false
exploited: false
published: "2026-09-25 17:17:19"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-28T16:23:35+02:00"
---

# CVE-2026-93363

> 5.3 MEDIUM · 🧪 PoC

## Beschreibung

The @payloadcms/storage-vercel-blob storage adapter for Payload contains an improper access control vulnerability that allows authenticated users to bypass collection-level permissions by accessing the client-upload route directly. Attackers can upload files through the client-upload endpoint without possessing the required collection access permissions, circumventing the intended access control enforcement.

## CVSS-Vektor

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

- e10b60228b92b680663110ea2af431643bfc6126 (Commit)

## Referenzen

- <https://github.com/payloadcms/payload/security/advisories/GHSA-mc8m-rr6c-r5qr>
- <https://www.vulncheck.com/advisories/payload-cms-storage-vercel-blob-adapter-improper-access-control-on-upload-route>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-93363) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_