Craft CMS before 5.10.5 WebAuthn Assertion Replay via login-with-passkey

{
  "id": "ab3ec763d1bd75aa2000eaaccb61d517593cafd9b4ed34597d610cae39f2fba9",
  "url": "https://osv.dev/vulnerability/CVE-2026-72780",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Craft CMS before 5.10.5 WebAuthn Assertion Replay via login-with-passkey",
    "summary": "Craft CMS before 5.10.5 fails to persist updated credential counters after WebAuthn assertion validation in the passkey login endpoint. Attackers can replay captured login request bodies containing requestOptions and response to create additional authenticated sessions for victim accounts.",
    "evidence": "osv:CVE-2026-72780",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-72780",
      "aliases": [
        "CVE-2026-72780",
        "GHSA-wg23-69c2-gjc8"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/craftcms/cms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "04755d93f86d07cc183db47db8a0eee106892e30"
                },
                {
                  "fixed": "f781aecea946641c1c66baa5cf4a39872f99e7c6"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "5.0.0-RC1"
                      },
                      {
                        "fixed": "5.10.5"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "5.10.5"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72780.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.860279390Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72780.json",
        "https://github.com/craftcms/cms/security/advisories/GHSA-wg23-69c2-gjc8",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-72780",
        "https://www.vulncheck.com/advisories/craft-cms-before-webauthn-assertion-replay-via-login-with-passkey"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-294"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72780.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-72780",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 505370,
  "published_at": "2026-08-11T12:17:15.532+00:00"
}