KodExplorer unauthenticated file access (CVE-2026-6569)

Vendor-confirmed - CVE-2026-6569 is a high authentication bypass in KodExplorer up to 4.52 that reads arbitrary server files without credentials. Upgrade to a version newer than 4.52 to block this exploit.

Overview

A security vulnerability, tracked as CVE-2026-6569, has been identified in kodcloud KodExplorer, a web-based file manager. The flaw exists in versions up to and including 4.52. It allows a remote attacker to bypass authentication controls and access files on the server without requiring valid credentials.

Vulnerability Details

The vulnerability is located in the fileGet function within the /app/controller/share.class.php file. This function is part of a file-sharing endpoint. By manipulating the fileUrl argument in a network request, an attacker can trick the application into serving files that should be protected. The attack is straightforward to perform, requires no user interaction, and can be launched remotely over a network.

Impact

Successful exploitation of this vulnerability could allow an unauthenticated attacker to read sensitive files from the KodExplorer server. This includes configuration files, application source code, or any other data stored within the web directory. While the EPSS score indicates a low probability (0.1%) of widespread exploitation in the next 30 days, the high CVSS score of 7.3 reflects the significant potential impact if the flaw is leveraged.

Remediation and Mitigation

The primary remediation is to upgrade KodExplorer to a version newer than 4.52. As the vendor did not respond to the initial disclosure, users should check the official kodcloud website or repository for any security patches or updated releases.

If an immediate upgrade is not possible, consider the following mitigation steps:

• Restrict network access to the KodExplorer interface to trusted IP addresses only, using firewall rules.
• Implement a Web Application Firewall (WAF) to block malicious requests targeting the vulnerable endpoint.
• Conduct a review of server file permissions to ensure sensitive data is stored outside the web-accessible directory.

For more information on recent data exposures, you can review current breach reports.

Security Insight

This vulnerability highlights a recurring pattern in self-hosted software where file management functions become vectors for path traversal or authentication bypass. It echoes past incidents in similar platforms where insufficient validation of user-supplied file parameters leads to data leakage. The lack of vendor response in this case underscores the operational security risk of relying on software with potentially slow or absent patch management, necessitating robust network-level compensating controls. Stay informed on such trends by following security news.

Further Reading

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