CVE-2026-63123
Tina: Cross-origin `POST /media/upload/*` requests can write arbitrary files into the Tina dev server media root
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @tinacms/cli | < 2.5.2 | 2.5.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-rgr9-r7mj-mf6x
- 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
- https://nvd.nist.gov/vuln/detail/CVE-2026-63123