CVE-2026-63123
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 products
- Tinacms
- CVSS 3.1
- 6.5 MEDIUM
- EPSS
- 0.2% (9th percentile)
- Weakness
- CWE-352
- NVD status
- Received
- Published
- 2026-08-19
No indexed exploits for CVE-2026-63123 yet
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No exploit for CVE-2026-63123 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.