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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-55370 Detail

Description

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto's existing TOTP verification accepted a successfully used TOTP code again while the code remained inside the RFC 6238 acceptance window because the verifier used otplib's stateless check with window = 1 and did not persist or compare the accepted TOTP time-step counter. An attacker who has the victim's first factor and captures a live TOTP value can replay that value to satisfy MFA during the same acceptance window. This issue is fixed in version 1.41.0.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/logto-io/logto/commit/9118867f6cbadc7291cf913beb4fede91ed5d374 GitHub, Inc.
https://github.com/logto-io/logto/pull/9109 GitHub, Inc.
https://github.com/logto-io/logto/releases/tag/v1.41.0 GitHub, Inc.
https://github.com/logto-io/logto/security/advisories/GHSA-6wj7-c66m-6c82 GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-294 Authentication Bypass by Capture-replay GitHub, Inc.  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-55370
NVD Published Date:
07/10/2026
NVD Last Modified:
07/10/2026
Source:
GitHub, Inc.