{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "3.25.0"
              },
              {
                "fixed": "3.90.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "bdf0113b2f52f9c7fc06118d4bf2025cec5ca527"
            },
            {
              "fixed": "e10b60228b92b680663110ea2af431643bfc6126"
            }
          ],
          "repo": "https://github.com/payloadcms/payload",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-mc8m-rr6c-r5qr"
  ],
  "database_specific": {
    "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"
      }
    ]
  },
  "details": "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.",
  "id": "CVE-2026-93363",
  "modified": "2026-09-27T03:30:50.398949770Z",
  "published": "2026-09-25T16:53:12.583Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93363.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/payloadcms/payload/security/advisories/GHSA-mc8m-rr6c-r5qr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93363"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/payload-cms-storage-vercel-blob-adapter-improper-access-control-on-upload-route"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/payloadcms/payload"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Payload CMS storage-vercel-blob Adapter Improper Access Control on Upload Route"
}