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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.

PUBLISHED Reserved 2026-03-03 | Published 2026-03-12 | Updated 2026-03-13 | Assigner GitHub_M




CRITICAL: 9.7CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Problem types

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-942: Permissive Cross-domain Policy with Untrusted Domains

Product status

< 2.1.8
affected

References

github.com/...inacms/security/advisories/GHSA-8pw3-9m7f-q734 exploit

github.com/...inacms/security/advisories/GHSA-8pw3-9m7f-q734

cve.org (CVE-2026-28792)

nvd.nist.gov (CVE-2026-28792)

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