{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63123","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-07-15T16:54:55.816Z","datePublished":"2026-08-19T21:41:18.687Z","dateUpdated":"2026-08-25T14:20:27.175Z"},"containers":{"cna":{"title":"Tina: Cross-origin `POST /media/upload/*` requests can write arbitrary files into the Tina dev server media root","problemTypes":[{"descriptions":[{"cweId":"CWE-352","lang":"en","description":"CWE-352: Cross-Site Request Forgery (CSRF)","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/tinacms/tinacms/security/advisories/GHSA-rgr9-r7mj-mf6x","tags":["x_refsource_CONFIRM"],"url":"https://github.com/tinacms/tinacms/security/advisories/GHSA-rgr9-r7mj-mf6x"},{"name":"https://github.com/tinacms/tinacms/pull/7111","tags":["x_refsource_MISC"],"url":"https://github.com/tinacms/tinacms/pull/7111"},{"name":"https://github.com/tinacms/tinacms/commit/211997cdb53cbd43638bdee999faa65375cfc260","tags":["x_refsource_MISC"],"url":"https://github.com/tinacms/tinacms/commit/211997cdb53cbd43638bdee999faa65375cfc260"},{"name":"https://github.com/tinacms/tinacms/releases/tag/@tinacms/cli@2.5.2","tags":["x_refsource_MISC"],"url":"https://github.com/tinacms/tinacms/releases/tag/@tinacms/cli@2.5.2"}],"affected":[{"vendor":"tinacms","product":"tinacms","versions":[{"version":"< 2.5.2","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-08-19T21:41:18.687Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-rgr9-r7mj-mf6x","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/tinacms/tinacms/security/advisories/GHSA-rgr9-r7mj-mf6x","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-25T14:19:26.459504Z","id":"CVE-2026-63123","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-25T14:20:27.175Z"}}]}}