{"id":"CVE-2026-63123","revision":"f8aa9548bf8a4e11ba007b69fd9dd4e3","records":[{"revision":"f8aa9548bf8a4e11ba007b69fd9dd4e3","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-63123","aliases":[],"title":"Tina: Cross-origin `POST /media/upload/*` requests can write arbitrary files into the Tina dev server media root","description":"Tina is a headless content management system. Prior to 2.5.2, the TinaCMS CLI package's Vite dev server packages/@tinacms/cli/src/next/vite/cors.ts origin callback returns false for a disallowed origin but does not reject the request, and packages/@tinacms/cli/src/next/vite/plugins.ts still routes POST /media/upload/* to mediaRouter.handlePost. The upload code in packages/@tinacms/cli/src/next/commands/dev-command/server/media.ts writes attacker-controlled multipart contents inside the configured media root. A remote attacker can cause a developer's browser to submit this state-changing request by inducing the developer to visit an attacker-controlled page while tinacms dev is running. This issue is fixed in version 2.5.2.","state":0,"publishedAt":"2026-08-19T21:41:18.687+00:00","modifiedAt":"2026-08-25T14:20:27.175+00:00","affected":[{"ecosystem":"Vendor product","name":"tinacms","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"tinacms\",\n                    \"product\": \"tinacms\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.5.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/tinacms/tinacms/security/advisories/GHSA-rgr9-r7mj-mf6x","https://github.com/tinacms/tinacms/pull/7111","https://github.com/tinacms/tinacms/commit/211997cdb53cbd43638bdee999faa65375cfc260","https://github.com/tinacms/tinacms/releases/tag/@tinacms/cli@2.5.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-63123","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-63123","identifiers":["CVE-2026-63123"]},"retained":false,"historicalAffected":[]}],"coverage":[]}