{"id":"CVE-2026-93363","revision":"02ffd2d950164b1b917e974d9d6b1958","records":[{"revision":"02ffd2d950164b1b917e974d9d6b1958","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-93363","aliases":[],"title":"Payload CMS storage-vercel-blob Adapter Improper Access Control on Upload Route","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.","state":0,"publishedAt":"2026-09-25T16:53:12.583+00:00","modifiedAt":"2026-10-01T15:22:00.369+00:00","affected":[{"ecosystem":"Vendor product","name":"payload","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"vendor\": \"payloadcms\",\n                    \"product\": \"payload\",\n                    \"packageURL\": \"pkg:github/payloadcms/payload\",\n                    \"repo\": \"https://github.com/payloadcms/payload\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"3.25.0\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"3.90.0\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"4.0.0-canary.0\",\n                            \"versionType\": \"custom\",\n                            \"lessThan\": \"4.0.0-canary.34\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"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","score":5.3,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","score":4.3,"severity":"MEDIUM"}],"references":["https://github.com/payloadcms/payload/security/advisories/GHSA-mc8m-rr6c-r5qr","https://www.vulncheck.com/advisories/payload-cms-storage-vercel-blob-adapter-improper-access-control-on-upload-route"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-93363","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-93363","identifiers":["CVE-2026-93363"]},"retained":false,"historicalAffected":[]}],"coverage":[]}