{"id":"CVE-2026-28792","aliases":["GHSA-8pw3-9m7f-q734"],"url":"https://o3.security/vulnerability/CVE-2026-28792","summary":"Cross-Origin File Exfiltration via CORS Misconfiguration + Path Traversal in TinaCMS","details":"Tina is a headless content management system. Prior to 2.1.8 , the TinaCMS CLI dev server combines a permissive CORS configuration (Access-Control-Allow-Origin: *) with the path traversal vulnerability (previously reported) to enable a browser-based drive-by attack. A remote attacker can enumerate the filesystem, write arbitrary files, and delete arbitrary files on developer's machines by simply tricking them into visiting a malicious website while tinacms dev is running. This vulnerability is fixed in 2.1.8.","published":"2026-03-12T16:48:16.461Z","modified":"2026-08-07T11:30:59.977890751Z","cvss":{"score":9.6,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@tinacms/cli","fixedVersion":"2.1.8"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28792.json"},{"type":"ADVISORY","url":"https://github.com/tinacms/tinacms/security/advisories/GHSA-8pw3-9m7f-q734"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28792"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:30:59.977890751Z"}}