CVE-2026-28792
Cross-Origin File Exfiltration via CORS Misconfiguration + Path Traversal in TinaCMS
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.
INFO
Published Date :
March 12, 2026, 5:16 p.m.
Last Modified :
March 13, 2026, 7:54 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Update TinaCMS CLI to version 2.1.8.
- Ensure CORS settings are restrictive.
- Do not visit untrusted websites.
- Restart the TinaCMS development server.
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-2026-28792.
| URL | Resource |
|---|---|
| https://github.com/tinacms/tinacms/security/advisories/GHSA-8pw3-9m7f-q734 | Exploit Vendor Advisory |
| https://github.com/tinacms/tinacms/security/advisories/GHSA-8pw3-9m7f-q734 | 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-2026-28792 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-2026-28792
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-2026-28792 vulnerability anywhere in the article.
-
Daily CyberSecurity
The Poisoned Pickle: Critical Unpatched RCE Flaws Expose SGLang AI Infrastructure
Security researchers have issued a warning to the AI development community following the discovery of critical vulnerabilities in SGLang, a popular open-source serving framework for Large Language Mod ... Read more
-
Daily CyberSecurity
Critical 9.7 CVSS TinaCMS Flaw Exposes Local Developer Machines
Security researchers have exposed a devastating vulnerability in TinaCMS, a popular headless content management system used by developers globally to manage Markdown and MDX content. The flaw, tracked ... Read more
The following table lists the changes that have been made to the
CVE-2026-28792 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.
-
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-8pw3-9m7f-q734 -
Initial Analysis by [email protected]
Mar. 13, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:ssw:tinacms/cli:*:*:*:*:*:node.js:*:* versions up to (excluding) 2.1.8 Added Reference Type GitHub, Inc.: https://github.com/tinacms/tinacms/security/advisories/GHSA-8pw3-9m7f-q734 Types: Exploit, Vendor Advisory -
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 2.1.8 , 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H Added CWE CWE-22 Added CWE CWE-942 Added Reference https://github.com/tinacms/tinacms/security/advisories/GHSA-8pw3-9m7f-q734