Vulnerability · Published Mar 13, 2026 · Assigned by zdi

CVE-2026-3839Unraid Authentication Request Path Traversal Authentication Bypass Vulnerability

High 7.3

In plain English

A high-severity path traversal in Unraid from Unraid. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities).

Severity (CVSS 3.0)7.3High

Exploit odds (30 days)0.8%top 44.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Unraid	Unraid	7.2.3

Weakness: CWE-22 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

References

ZDI-26-172 x_research-advisory