CVE-2026-93363
Payload CMS storage-vercel-blob Adapter Improper Access Control on Upload Route
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-862 |
| Vendor | payloadcms |
| Product | payload |
| Published | Sep 25, 2026 |
| Last Updated | Sep 25, 2026 |
Stay Ahead of the Next One
Get instant alerts for payloadcms payload
Be the first to know when new medium vulnerabilities affecting payloadcms payload are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
payloadcms / payload
3.25.0 < 3.90.0 4.0.0-canary.0 < 4.0.0-canary.34
References
Credits
Saidakbarxon Maxsudxonov