{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.41.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "91e55698a42f99438cd41ec2b16a1fc51dbdab8a"
            }
          ],
          "repo": "https://github.com/logto-io/logto",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-q4h3-38gc-4p4j"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-287"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55377.json"
  },
  "details": "Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto's Account Center step-up check accepted any active verification record that belonged to the current user and had isVerified === true. A WebAuthn registration verification record for binding a new passkey could be created and verified with only an existing Account API bearer token, then sent in the logto-verification-id header and treated as identityVerified=true by Account Center routes, allowing MFA factor management without proving possession of an existing password, identifier, or MFA factor. This issue is fixed in version 1.41.0.",
  "id": "CVE-2026-55377",
  "modified": "2026-08-04T11:31:08.904679736Z",
  "published": "2026-07-10T19:57:58.088Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/logto-io/logto/releases/tag/v1.41.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55377.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/logto-io/logto/security/advisories/GHSA-q4h3-38gc-4p4j"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55377"
    },
    {
      "type": "FIX",
      "url": "https://github.com/logto-io/logto/commit/f56255a7edf3b22b0ec2fdb814814ce6b0123b74"
    },
    {
      "type": "FIX",
      "url": "https://github.com/logto-io/logto/pull/9110"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Logto: Account Center MFA management step-up bypass via WebAuthn registration verification"
}