CVE-2026-55377 (GCVE-0-2026-55377)

Vulnerability from cvelistv5 – Published: 2026-07-10 19:57 – Updated: 2026-07-10 19:57
VLAI
Title
Logto: Account Center MFA management step-up bypass via WebAuthn registration verification
Summary
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.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-287 - Improper Authentication
Assigner
References
Impacted products
Vendor Product Version
logto-io logto Affected: < 1.41.0
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "logto",
          "vendor": "logto-io",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.41.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto\u0027s 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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287: Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-10T19:57:58.088Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/logto-io/logto/security/advisories/GHSA-q4h3-38gc-4p4j",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/logto-io/logto/security/advisories/GHSA-q4h3-38gc-4p4j"
        },
        {
          "name": "https://github.com/logto-io/logto/pull/9110",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/logto-io/logto/pull/9110"
        },
        {
          "name": "https://github.com/logto-io/logto/commit/f56255a7edf3b22b0ec2fdb814814ce6b0123b74",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/logto-io/logto/commit/f56255a7edf3b22b0ec2fdb814814ce6b0123b74"
        },
        {
          "name": "https://github.com/logto-io/logto/releases/tag/v1.41.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/logto-io/logto/releases/tag/v1.41.0"
        }
      ],
      "source": {
        "advisory": "GHSA-q4h3-38gc-4p4j",
        "discovery": "UNKNOWN"
      },
      "title": "Logto: Account Center MFA management step-up bypass via WebAuthn registration verification"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55377",
    "datePublished": "2026-07-10T19:57:58.088Z",
    "dateReserved": "2026-06-16T18:57:40.181Z",
    "dateUpdated": "2026-07-10T19:57:58.088Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-55377",
      "date": "2026-07-11",
      "epss": "0.00259",
      "percentile": "0.17324"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-55377\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-07-10T20:16:46.460\",\"lastModified\":\"2026-07-10T20:16:46.460\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto\u0027s 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.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"logto-io\",\"product\":\"logto\",\"versions\":[{\"version\":\"\u003c 1.41.0\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N\",\"baseScore\":8.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-287\"}]}],\"references\":[{\"url\":\"https://github.com/logto-io/logto/commit/f56255a7edf3b22b0ec2fdb814814ce6b0123b74\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/logto-io/logto/pull/9110\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/logto-io/logto/releases/tag/v1.41.0\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/logto-io/logto/security/advisories/GHSA-q4h3-38gc-4p4j\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.