{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "Psono Server Community Edition",
            "Psono Server Enterprise Edition"
          ],
          "product": "Psono",
          "programFiles": [
            "psono/restapi/serializers/webauthn_verify.py"
          ],
          "repo": "https://gitlab.com/esaqa/psono/psono-server",
          "vendor": "esaqa GmbH",
          "versions": [
            {
              "lessThan": "7.2.4",
              "status": "affected",
              "version": "3.1.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Ryan Chaplin"
        }
      ],
      "datePublic": "2026-10-27T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003ePsono Server CE \u0026amp; EE versions 3.1.0 through 7.2.3 did not consume a stored WebAuthn challenge after assertion verification. An unauthenticated remote attacker who possessed the user\u0027s password and one captured valid WebAuthn assertion could replay that assertion with separate login tokens while the stored challenge remained unchanged, bypassing the WebAuthn second factor. The attack required capture of a valid assertion and did not itself disclose plaintext secrets.\u003c/p\u003e"
            }
          ],
          "value": "Psono Server CE \u0026 EE versions 3.1.0 through 7.2.3 did not consume a stored WebAuthn challenge after assertion verification. An unauthenticated remote attacker who possessed the user\u0027s password and one captured valid WebAuthn assertion could replay that assertion with separate login tokens while the stored challenge remained unchanged, bypassing the WebAuthn second factor. The attack required capture of a valid assertion and did not itself disclose plaintext secrets."
        }
      ],
      "impacts": [
        {
          "descriptions": [
            {
              "lang": "en",
              "value": "An attacker with a user\u0027s password and one captured valid WebAuthn assertion could replay the assertion to bypass the WebAuthn second factor and gain account access."
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-294",
              "description": "CWE-294 Authentication Bypass by Capture-replay",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-27T05:53:41.709Z",
        "orgId": "fdf66990-8419-4c8c-8848-ec15d75773b4",
        "shortName": "esaqa"
      },
      "references": [
        {
          "name": "Vendor security advisory for CVE-2026-117470",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://gitlab.com/esaqa/esaqa/security-advisories/-/blob/master/advisories/CVE-2026-117470.md"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://gitlab.com/esaqa/psono/psono-server/-/blob/v7.2.3/psono/restapi/serializers/webauthn_verify.py"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://gitlab.com/esaqa/psono/psono-server/-/commit/9c9a7f1701535df63370340dcc80210737dc495d"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://gitlab.com/esaqa/psono/psono-server"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eUpgrade to Psono Server 7.2.4 or later.\u003c/p\u003e"
            }
          ],
          "value": "Upgrade to Psono Server 7.2.4 or later."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2026-07-29T16:10:00.000Z",
          "value": "Vulnerability reported to vendor"
        },
        {
          "lang": "en",
          "time": "2026-07-30T07:49:00.000Z",
          "value": "Vendor fix implemented"
        },
        {
          "lang": "en",
          "time": "2026-07-30T13:16:00.000Z",
          "value": "Psono Server CE \u0026 EE 7.2.4 released"
        }
      ],
      "title": "WebAuthn assertion replay permits second-factor bypass in Psono Server",
      "x_generator": {
        "engine": "Vulnogram 1.0.5"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "fdf66990-8419-4c8c-8848-ec15d75773b4",
    "assignerShortName": "esaqa",
    "cveId": "CVE-2026-117470",
    "datePublished": "2026-10-27T05:53:41.709Z",
    "dateReserved": "2026-10-27T05:33:18.001Z",
    "dateUpdated": "2026-10-27T05:53:41.709Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}