FKIE_CVE-2026-3839

Vulnerability from fkie_nvd - Published: 2026-03-16 14:19 - Updated: 2026-03-17 14:19
Severity ?
7.3 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Summary
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.
References
zdi-disclosures@trendmicro.comhttps://www.zerodayinitiative.com/advisories/ZDI-26-172/Third Party Advisory
Impacted products
Vendor Product Version
unraid unraid 7.2.3
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:unraid:unraid:7.2.3:*:*:*:*:*:*:*",
              "matchCriteriaId": "D95356E9-EA87-443B-938B-89188AAB478B",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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.\n\nThe 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."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de omisi\u00f3n de autenticaci\u00f3n por salto de ruta en la solicitud de autenticaci\u00f3n de Unraid. Esta vulnerabilidad permite a atacantes remotos omitir la autenticaci\u00f3n en instalaciones afectadas de Unraid. La autenticaci\u00f3n no es necesaria para explotar esta vulnerabilidad.\n\nLa falla espec\u00edfica existe en el archivo auth-request.php. El problema se debe a la falta de validaci\u00f3n adecuada de una ruta proporcionada por el usuario antes de usarla en las autenticaciones. Un atacante puede aprovechar esta vulnerabilidad para omitir la autenticaci\u00f3n en el sistema. Fue ZDI-CAN-28912."
    }
  ],
  "id": "CVE-2026-3839",
  "lastModified": "2026-03-17T14:19:01.977",
  "metrics": {
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 7.3,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.4,
        "source": "zdi-disclosures@trendmicro.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-16T14:19:53.033",
  "references": [
    {
      "source": "zdi-disclosures@trendmicro.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-172/"
    }
  ],
  "sourceIdentifier": "zdi-disclosures@trendmicro.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "zdi-disclosures@trendmicro.com",
      "type": "Primary"
    }
  ]
}


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