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.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-862"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93363.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "4.0.0-canary.0"
},
{
"fixed": "4.0.0-canary.34"
}
],
"source": "AFFECTED_FIELD"
}
]
}