CVE-2026-28792 CRITICAL

CVE-2026-28792: Cross-Origin File Exfiltration via CORS Misconfiguration + Path Traversal in TinaCMS

Vendor @Tinacms
Product cli
Weakness CWE-22 · Path traversal
Published March 12, 2026
Last update March 13, 2026
View on NVD All CVEs

CVSS base score

9.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 12, 2026 CVE published
March 13, 2026 Record updated