{"id":"CVE-2026-56385","summary":"Craft CMS - Authorization Bypass in assets/preview-file Endpoint","details":"Craft CMS versions \u003e= 5.0.0-RC1, \u003c= 5.9.13 and \u003e= 4.0.0-RC1, \u003c= 4.17.7 contain an authorization bypass in the assets/preview-file endpoint. The action does not enforce per-asset view authorization before returning preview content, allowing an authenticated low-privileged user to supply a controlled assetId for an asset they are not permitted to view and still receive preview response data (previewHtml), including a private preview image route containing the target private assetId. Fixed in 5.9.14 and 4.17.8.","aliases":["GHSA-44px-qjjc-xrhq"],"modified":"2026-07-08T08:13:50.454520886Z","published":"2026-06-21T13:27:01.066Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56385.json","cwe_ids":["CWE-639"],"cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56385.json"},{"type":"ADVISORY","url":"https://github.com/craftcms/cms/security/advisories/GHSA-44px-qjjc-xrhq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56385"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/craft-cms-authorization-bypass-in-assets-preview-file-endpoint"},{"type":"FIX","url":"https://github.com/craftcms/cms/commit/d30df3112220db1ffd6726a3ed11857014c7fb27"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/craftcms/cms","events":[{"introduced":"04755d93f86d07cc183db47db8a0eee106892e30"},{"introduced":"daac7c1da2f701f2e9ddee1da1457ce61660b581"},{"fixed":"13c50dd550fabe74fe5317aeca090d286f1c7556"},{"fixed":"3262cfa628ade304f0e565f9e45b52fab0f32df3"},{"fixed":"d30df3112220db1ffd6726a3ed11857014c7fb27"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"5.0.0-RC1"},{"fixed":"5.9.14"},{"introduced":"4.0.0-RC1"},{"fixed":"4.17.8"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56385.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"}]}