---
cve: "CVE-2026-34750"
severity: "MEDIUM"
cvss: 6.5
epss: "34%"
vendor: "payloadcms"
kev: false
exploited: false
published: "2026-04-01 19:51:59"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-04T07:00:34+02:00"
---

# CVE-2026-34750

> 6.5 MEDIUM · 🧪 PoC

## Beschreibung

Payload is a free and open source headless content management system. Prior to version 3.78.0 in @payloadcms/storage-azure, @payloadcms/storage-gcs, @payloadcms/storage-r2, and @payloadcms/storage-s3, the client-upload signed-URL endpoints for S3, GCS, Azure, and R2 did not properly sanitize filenames. An attacker could craft filenames to escape the intended storage location. This issue has been patched in version 3.78.0 for @payloadcms/storage-azure, @payloadcms/storage-gcs, @payloadcms/storage-r2, and @payloadcms/storage-s3.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 05e818e3d19f289031e4edc4cfd8d09e166247af (Commit)

## Referenzen

- <https://github.com/payloadcms/payload/security/advisories/GHSA-frq9-7j6g-v74x>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-34750) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_