CVEvulnerability

CVE-2026-55370

6.4 MEDIUM Published 2026-07-10 Modified 2026-10-25 Official page ↗
Status
Deferred
Published
2026-07-10
Last modified
2026-10-25
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.4 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
Weaknesses
CWE-294

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.

Related

Weakness · CWE (1)

  • CWE-294 Authentication Bypass by Capture-replay weakness

References