Critical severityNVD Advisory· Published Mar 12, 2026· Updated Mar 13, 2026
Cross-Origin File Exfiltration via CORS Misconfiguration + Path Traversal in TinaCMS
CVE-2026-28792
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@tinacms/clinpm | < 2.1.8 | 2.1.8 |
Affected products
2- @tinacms/cliv5Range: < 2.1.8
Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-8pw3-9m7f-q734ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-28792ghsaADVISORY
- github.com/tinacms/tinacms/commit/56d533e610a520ba66b3e58f3a0dc03487d5d5d7ghsaWEB
- github.com/tinacms/tinacms/pull/6450ghsaWEB
- github.com/tinacms/tinacms/releases/tag/%40tinacms%2Fcli%402.1.8ghsaWEB
- github.com/tinacms/tinacms/security/advisories/GHSA-8pw3-9m7f-q734ghsax_refsource_CONFIRMWEB
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