CVE-2026-93363

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 v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

25 Sep 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-25 17:17

Updated : 2026-09-30 17:31

NVD link : CVE-2026-93363

Mitre link : CVE-2026-93363

CVE.ORG link : CVE-2026-93363

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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