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.
History

Thu, 01 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 01 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:payloadcms:payload:*:*:*:*:*:*:*:*

Sat, 26 Sep 2026 11:15:00 +0000

Type Values Removed Values Added
First Time appeared Payloadcms
Payloadcms payload
Vendors & Products Payloadcms
Payloadcms payload

Fri, 25 Sep 2026 17:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Payload CMS storage-vercel-blob Adapter Improper Access Control on Upload Route
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-09-25T16:53:12.583Z

Updated: 2026-10-01T15:22:00.369Z

Reserved: 2026-09-17T18:41:40.758Z

Link: CVE-2026-93363

cve-icon Vulnrichment

Updated: 2026-09-25T17:08:22.167Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-25T17:17:19.157

Modified: 2026-09-30T17:31:44.573

Link: CVE-2026-93363

cve-icon Redhat

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