Critical severity · published Mar 12, 2026
CVE-2026-28792
Cross-Origin File Exfiltration via CORS Misconfiguration + Path Traversal in TinaCMS
9.6
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CL
cli · @tinacms
< 2.1.8 · source: vendor
TI
Tinacms/cli · Ssw
before 2.1.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-28792
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-28792
Exploit
https://github.com/tinacms/tinacms/security/advisories/GHSA-8pw3-9m7f-q734
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