CVE-2026-55377CWE-287

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

High · published July 10, 2026

CVSS v3.1
8.1
EPSS
1%
Percentile
47.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00585 · 47.2th percentile
Weakness
CWE-287 · Improper Authentication
Published
2026-07-10T19:57Z
EPSS history
Timeline
  • 10 JUL 19:57Z
    Logto: Account Center MFA management step-up bypass via WebAuthn registration verification
    cvelistv5