Path Traversal Vulnerability in TinaCMS Affects Developers

CVE-2026-28792

What is CVE-2026-28792?

CVE-2026-28792 is a path traversal vulnerability found in TinaCMS, a headless content management system designed to allow developers to manage content more effectively and seamlessly within their applications. The vulnerability is associated with a combination of a permissive Cross-Origin Resource Sharing (CORS) policy and a flaw in the TinaCMS CLI development server, which could be exploited to execute unauthorized file operations on developers' machines. This could happen if a developer inadvertently visits a malicious web page while the TinaCMS development server is running. Attackers can leverage this vulnerability to access the filesystem, potentially leading to serious consequences such as unauthorized file modification or deletion.

Potential impact of CVE-2026-28792

1. File System Enumeration: Attackers can gain insights into a developer's file system structure by leveraging the vulnerability, which could expose sensitive data or application-specific files that are critical for further exploitation.

2. Arbitrary File Write: The vulnerability allows remote attackers to write files to the developer's machine. This could result in the introduction of malicious files or scripts, which might facilitate further compromises or serve as a vector for launching attacks.

3. File Deletion: The ability to delete arbitrary files poses a significant risk as it can disrupt the development environment, potentially leading to loss of important data, configurations, or project files crucial for ongoing development work.

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