Vulnerability · Published Mar 12, 2026 · Assigned by GitHub_M
CVE-2026-28792Cross-Origin File Exfiltration via CORS Misconfiguration + Path Traversal in TinaCMS
Critical 9.7
In plain English
A critical-severity path traversal in cli from @tinacms. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Tina is a headless content management system. Prior to 2.1.8 , the TinaCMS CLI dev server combines a permissive CORS configuration (Access-Control-Allow-Origin: *) with the path traversal vulnerability (previously reported) to enable a browser-based drive-by attack. A remote attacker can enumerate the filesystem, write arbitrary files, and delete arbitrary files on developer's machines by simply tricking them into visiting a malicious website while tinacms dev is running. This vulnerability is fixed in 2.1.8.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @tinacms/cli | 2.1.8 | GHSA-8pw3-9m7f-q734 |
Affected products (as reported)
Weakness: CWE-22, CWE-942 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
References
- https://github.com/tinacms/tinacms/security/advisories/GHSA-8pw3-9m7f-q734 x_refsource_CONFIRM