CVE-2026-28791
Path Traversal in Media Upload Handle in Tina
Description
Tina is a headless content management system. Prior to 2.1.7, a path traversal vulnerability exists in the TinaCMS development server's media upload handler. The code at media.ts joins user-controlled path segments using path.join() without validating that the resulting path stays within the intended media directory. This allows writing files to arbitrary locations on the filesystem. This vulnerability is fixed in 2.1.7.
INFO
Published Date :
March 12, 2026, 5:16 p.m.
Last Modified :
March 13, 2026, 7:55 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-28791
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update TinaCMS to version 2.1.7 or newer.
- Ensure user input for paths is validated.
- Restrict file write locations.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-28791.
| URL | Resource |
|---|---|
| https://github.com/tinacms/tinacms/security/advisories/GHSA-5hxf-c7j4-279c | Exploit Vendor Advisory |
| https://github.com/tinacms/tinacms/security/advisories/GHSA-5hxf-c7j4-279c | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-28791 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-28791
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-28791 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-28791 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:ssw:tinacms/cli:*:*:*:*:*:node.js:*:* versions up to (excluding) 2.1.7 Added Reference Type CISA-ADP: https://github.com/tinacms/tinacms/security/advisories/GHSA-5hxf-c7j4-279c Types: Exploit, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/tinacms/tinacms/security/advisories/GHSA-5hxf-c7j4-279c Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 13, 2026
Action Type Old Value New Value Added Reference https://github.com/tinacms/tinacms/security/advisories/GHSA-5hxf-c7j4-279c -
New CVE Received by [email protected]
Mar. 12, 2026
Action Type Old Value New Value Added Description Tina is a headless content management system. Prior to 2.1.7, a path traversal vulnerability exists in the TinaCMS development server's media upload handler. The code at media.ts joins user-controlled path segments using path.join() without validating that the resulting path stays within the intended media directory. This allows writing files to arbitrary locations on the filesystem. This vulnerability is fixed in 2.1.7. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H Added CWE CWE-22 Added Reference https://github.com/tinacms/tinacms/security/advisories/GHSA-5hxf-c7j4-279c