CVE-2026-28793 Details
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.
A path traversal vulnerability has been identified in the TinaCMS CLI development server, prior to version 2.1.8. The issue arises in media endpoints that improperly handle user-controlled path segments, allowing attackers to read, write, or delete arbitrary files on the filesystem outside the designated media directory. This vulnerability is present when the TinaCMS development server is running, typically on localhost port 4001, and can be exploited through endpoints such as /media/list/*, /media/upload/*, and /media/*. The vulnerability exists because the server processes path segments using decodeURI() and path.join() without validating that the final path remains within the allowed media directory.
Users are advised to update to TinaCMS version 2.1.8 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/tinacms/tinacms/security/advisories/GHSA-2f24-mg4x-534q | CISA-ADP | ExploitVendor Advisory |
| https://github.com/tinacms/tinacms/security/advisories/GHSA-2f24-mg4x-534q | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| ssw tinacms/cli | < 2.1.8 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 13, 2026 | Initial Analysis | [email protected] |
| Mar 13, 2026 | CVE Modified | CISA-ADP |
| Mar 12, 2026 | New CVE Received | [email protected] |