CVE-2026-93363: @payloadcms/storage-vercel-blob has access control bypass of uploads in Vercel Storage adapter
In affected configurations, client upload access does not consistently align with the associated collection’s access configuration.
You are affected if:
- You use client uploads with
@payloadcms/storage-vercel-blob. - Authenticated users can access the client-upload route.
Applications that do not enable client uploads are not affected.
References
- github.com/advisories/GHSA-mc8m-rr6c-r5qr
- github.com/payloadcms/payload/commit/47abe9bb5c444330dbfaa9a5bc2033337932270b
- github.com/payloadcms/payload/releases/tag/v3.90.0
- github.com/payloadcms/payload/security/advisories/GHSA-mc8m-rr6c-r5qr
- nvd.nist.gov/vuln/detail/CVE-2026-93363
- www.vulncheck.com/advisories/payload-cms-storage-vercel-blob-adapter-improper-access-control-on-upload-route
Code Behaviors & Features
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