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CVE-2026-3839

7.3 · HIGH

Unraid Authentication Request Path Traversal Authentication Bypass Vulnerability.

Published Mar 16, 2026CWE-22EPSS 0.88%

Overview

CVE-2026-3839 is a high-severity vulnerability. It was published on March 16, 2026 and has a CVSS 3.0 base score of 7.3 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Unraid Authentication Request Path Traversal Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Unraid. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the auth-request.php file. The issue results from the lack of proper validation of a user-supplied path prior to using it in authentications. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-28912.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.zerodayinitiative.com/advisories/ZDI-26-172/

How CyberStrike helps

Frequently asked questions

What is CVE-2026-3839?

CVE-2026-3839 is a high-severity vulnerability. It was published on March 16, 2026 and has a CVSS 3.0 base score of 7.3 (HIGH).

How severe is CVE-2026-3839?

This vulnerability has a CVSS 3.0 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-3839?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-3839?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-3839 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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