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CVE-2026-93363: Missing Authorization in payloadcms payload

0
Medium
VulnerabilityCVE-2026-93363cvecve-2026-93363
Published: 09/25/2026 (09/25/2026, 16:53:12 UTC)
Source: CVE Database V5
Vendor/Project: payloadcms
Product: payload

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.

CVSS v4.0

Score 5.3medium

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
None
Vuln. Integrity
Low
Vuln. Availability
None
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
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

Affected software

payloadcms

payload

Affected versions
>=3.25.0 <3.90.0>=4.0.0-canary.0 <4.0.0-canary.34
GitHub Actionsmore threats →cve
payload
pkg:github/payload
Affected versions
>=3.25.0 <3.90.0>=4.0.0-canary.0 <4.0.0-canary.34

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

Technical Details

Data Version
5.2
Assigner Short Name
VulnCheck
Date Reserved
2026-09-17T18:41:40.758Z
Cvss Version
4.0
State
PUBLISHED

Threat ID: 6ab6a961f7a7c5410609b6b1

Added to database: 09/25/2026, 17:03:29 UTC

Last updated: 09/25/2026, 17:03:29 UTC

Views: 1

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