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CVE-2026-28793

Path Traversal Leading to Arbitrary File Read, Write and Delete in TinaCMS

Published: Mar 12, 2026Updated: Mar 13, 2026 Sources: CVE List NVD GHSACWE-22
NVD MITRE
8.4CVSSHIGH
EPSS Score
0.2%
Top 89.8%
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 development server exposes media endpoints that are vulnerable to path traversal, allowing attackers to read and write arbitrary files on the filesystem outside the intended media directory. When running tinacms dev, the CLI starts a local HTTP server (default port 4001) exposing endpoints such as /media/list/*, /media/upload/*, and /media/*. These endpoints process user-controlled path segments using decodeURI() and path.join() without validating that the resolved path remains within the configured media directory. This vulnerability is fixed in 2.1.8.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-22

Affected Products

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

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-2f24-mg4x-534q
github.com
https://nvd.nist.gov/vuln/detail/CVE-2026-28793
nvd.nist.gov
https://github.com/tinacms/tinacms
github.com

Timeline

Published
Mar 12, 2026
Last Updated
Mar 13, 2026

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