CVE-2026-55370

The record

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.

Affected packages

Related vulnerabilities

• CVE-2026-87952 Authentication Bypass by Capture-replay vulnerability in Drupal SAML SSO - Service… CWE-294
• CVE-2026-88278 GeoVision GV-LPC2211 V1.13 fails to enforce WS-Security UsernameToken freshness or nonce… CWE-294
• CVE-2026-55250 Maravel, a PHP framework oriented towards dependency injection, prior to version 10.74.0… CWE-294
• CVE-2026-73312 XenForo before 2.3.13 contains a refresh token replay vulnerability that allows attackers… CWE-294
• CVE-2026-73311 XenForo before 2.3.13 contains an OAuth2 authorization code reuse vulnerability that… CWE-294
• CVE-2026-86219 Authen::SASL::Perl::DIGEST_MD5 versions before 2.2100 for Perl accept replayed… CWE-294
• CVE-2026-53636 Open edX Platform enables the authoring and delivery of online learning at any scale. CWE-294
• CVE-2026-12704 When SAML IdP-initiated login is enabled in Grafana Enterprise, the SAML library skips… CWE-294