CVE-2026-55377 Details
Description
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.
A vulnerability in Logto's Account Center prior to version 1.41.0 allows for unauthorized management of multi-factor authentication (MFA) factors. The issue arises because the Account Center step-up verification process accepts any active verification record that belongs to the user and is marked as verified. This includes WebAuthn registration records, which can be created and verified using just an existing Account API bearer token. Once a WebAuthn registration record is verified, it can be used to bypass the step-up verification requirement for MFA management, enabling unauthorized changes to a user's MFA settings.
Users should update to Logto version 1.41.0 or later, where this vulnerability has been addressed. After updating, the step-up verification process in Account Center will only accept verification records that are specifically intended for user permission validation, such as verified password or email/phone verification-code records.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 10, 2026CISA-ADP
Assessed Jul 13, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/logto-io/logto/security/advisories/GHSA-q4h3-38gc-4p4j | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/logto-io/logto/commit/f56255a7edf3b22b0ec2fdb814814ce6b0123b74 | [email protected] | Source CodeVendor |
| https://github.com/logto-io/logto/pull/9110 | [email protected] | Source CodeVendor |
| https://github.com/logto-io/logto/releases/tag/v1.41.0 | [email protected] | Release NotesVendor |
| https://github.com/logto-io/logto/security/advisories/GHSA-q4h3-38gc-4p4j | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Logto | <= 1.40.1 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 13, 2026 | CVE Modified | CISA-ADP |
| Jul 10, 2026 | New CVE Received | [email protected] |