CVE-2026-28793

The record

Tina is a headless content management system. Prior to 2.1.8, the TinaCMS CLI development server exposes media endpoints that are vulnerable to path traversal, allowing attackers to read and write arbitrary files on the filesystem outside the intended media directory. When running tinacms dev, the CLI starts a local HTTP server (default port 4001) exposing endpoints such as /media/list/*, /media/upload/*, and /media/*. These endpoints process user-controlled path segments using decodeURI() and path.join() without validating that the resolved path remains within the configured media directory. This vulnerability is fixed in 2.1.8.

Affected packages

Related vulnerabilities

• GHSA-2f24-mg4x-534q TinaCMS Vulnerable to Path Traversal Leading to Arbitrary File Read, Write and Delete Same vulnerability
• GHSA-4936-9hrh-qqpw @tinacms/cli: Remote Code Execution in @tinacms/cli via Forestry migration — unsanitised… Also affects @tinacms/cli
• GHSA-m48g-4wr2-j2h6 TinaCMS CLI has Arbitrary File Read via Disabled Vite Filesystem Restriction Also affects @tinacms/cli
• GHSA-8pw3-9m7f-q734 TinaCMS CLI Dev Server Vulnerable to Cross-Origin File Exfiltration via CORS… Also affects @tinacms/cli
• CVE-2026-28792 Tina is a headless content management system. Also affects @tinacms/cli
• CVE-2026-29066 Tina is a headless content management system. Also affects @tinacms/cli
• GHSA-529f-9qwm-9628 tinacms is vulnerable to arbitrary code execution Also affects @tinacms/cli
• CVE-2025-68278 Tina is a headless content management system. Also affects @tinacms/cli