FKIE_CVE-2026-117471

Vulnerability from fkie_nvd - Published: 2026-10-27 06:17 - Updated: 2026-10-27 15:00
Severity
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
Summary
Psono Server CE && EE versions 0.1.0 through 7.2.3 accepted a user-controlled host when configuring a personal Duo device and passed it to the Duo client without an allowlist or explicit timeout. An authenticated remote attacker could cause the server to connect to selected hosts over HTTPS on port 443 and distinguish failure modes, providing an internal DNS and service-reachability oracle. Connections still required TLS certificate validation, and the flaw did not provide arbitrary protocol or port access. Unresponsive targets could also occupy a server worker until the operating-system timeout.
References
fdf66990-8419-4c8c-8848-ec15d75773b4https://gitlab.com/esaqa/esaqa/security-advisories/-/blob/master/advisories/CVE-2026-117471.md
fdf66990-8419-4c8c-8848-ec15d75773b4https://gitlab.com/esaqa/psono/psono-server
fdf66990-8419-4c8c-8848-ec15d75773b4https://gitlab.com/esaqa/psono/psono-server/-/blob/v7.2.3/psono/restapi/serializers/new_duo.py
fdf66990-8419-4c8c-8848-ec15d75773b4https://gitlab.com/esaqa/psono/psono-server/-/commit/4059830475744791f3d3a1daa4e1603aea5549ed
fdf66990-8419-4c8c-8848-ec15d75773b4https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "Psono Server Community Edition",
            "Psono Server Enterprise Edition"
          ],
          "product": "Psono",
          "programFiles": [
            "psono/restapi/serializers/new_duo.py",
            "psono/restapi/utils/duo.py"
          ],
          "repo": "https://gitlab.com/esaqa/psono/psono-server",
          "vendor": "esaqa GmbH",
          "versions": [
            {
              "lessThan": "7.2.4",
              "status": "affected",
              "version": "0.1.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "fdf66990-8419-4c8c-8848-ec15d75773b4"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Psono Server CE \u0026\u0026 EE versions 0.1.0 through 7.2.3 accepted a user-controlled host when configuring a personal Duo device and passed it to the Duo client without an allowlist or explicit timeout. An authenticated remote attacker could cause the server to connect to selected hosts over HTTPS on port 443 and distinguish failure modes, providing an internal DNS and service-reachability oracle. Connections still required TLS certificate validation, and the flaw did not provide arbitrary protocol or port access. Unresponsive targets could also occupy a server worker until the operating-system timeout."
    }
  ],
  "id": "CVE-2026-117471",
  "lastModified": "2026-10-27T15:00:49.240",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.5,
        "source": "fdf66990-8419-4c8c-8848-ec15d75773b4",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-10-27T06:17:25.020",
  "references": [
    {
      "source": "fdf66990-8419-4c8c-8848-ec15d75773b4",
      "url": "https://gitlab.com/esaqa/esaqa/security-advisories/-/blob/master/advisories/CVE-2026-117471.md"
    },
    {
      "source": "fdf66990-8419-4c8c-8848-ec15d75773b4",
      "url": "https://gitlab.com/esaqa/psono/psono-server"
    },
    {
      "source": "fdf66990-8419-4c8c-8848-ec15d75773b4",
      "url": "https://gitlab.com/esaqa/psono/psono-server/-/blob/v7.2.3/psono/restapi/serializers/new_duo.py"
    },
    {
      "source": "fdf66990-8419-4c8c-8848-ec15d75773b4",
      "url": "https://gitlab.com/esaqa/psono/psono-server/-/commit/4059830475744791f3d3a1daa4e1603aea5549ed"
    },
    {
      "source": "fdf66990-8419-4c8c-8848-ec15d75773b4",
      "url": "https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4"
    }
  ],
  "sourceIdentifier": "fdf66990-8419-4c8c-8848-ec15d75773b4",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "fdf66990-8419-4c8c-8848-ec15d75773b4",
      "type": "Secondary"
    }
  ]
}



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