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CVE-2026-28792

Cross-Origin File Exfiltration via CORS Misconfiguration + Path Traversal in TinaCMS

Published: Mar 12, 2026Updated: Mar 13, 2026 Sources: CVE List NVD GHSACWE-22
NVD MITRE
9.6CVSSCRITICAL
EPSS Score
0.5%
Top 59.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Breakdown

AV:NAC:LPR:NUI:RS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-22CWE-942

Affected Products

tinacms\/clissw
Mixed
Web & CMS Plugins / cms-core
@tinacms/clinpmOSS Libraries
cli@tinacms
Library
Web & CMS Plugins / cms-core
sswWeb & CMS Pluginsaka tinacms/cli, tinacms/graphql, tina cms
npmpackage-ecosystemOSS Libraries
@tinacmsoss-projectWeb & CMS Pluginsaka @tinacms, tina cms

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://github.com/tinacms/tinacms/security/advisories/GHSA-8pw3-9m7f-q734
github.com
https://nvd.nist.gov/vuln/detail/CVE-2026-28792
nvd.nist.gov
https://github.com/tinacms/tinacms/pull/6450
github.com
and 3 more references View all →

Timeline

Published
Mar 12, 2026
Last Updated
Mar 13, 2026

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