Logto: Account Center MFA management step-up bypass via WebAuthn registration verification

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Summary

CVECVE-2026-55377
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-10 20:16:46 UTC
Updated2026-07-10 20:16:46 UTC
DescriptionLogto 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.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.002590000 probability, percentile 0.173240000 (date 2026-07-11)

Problem Types: CWE-287 | CWE-287 CWE-287: Improper Authentication

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
3.1CNADECLARED8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Logto-io Logto affected < 1.41.0 Not specified

References

ReferenceSourceLinkTags
github.com/logto-io/logto/commit/f56255a7edf3b22b0ec2fdb814814ce6b0123b74 [email protected] github.com
github.com/logto-io/logto/releases/tag/v1.41.0 [email protected] github.com
github.com/logto-io/logto/security/advisories/GHSA-q4h3-38gc-4p4j [email protected] github.com
github.com/logto-io/logto/pull/9110 [email protected] github.com
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