CVE-2024-8796: Tinfoilsecurity Devise-Two-Factor

Medium severity, CVSS 5.3. EPSS: 0.6% chance of exploitation in the next 30 days.

Under the default configuration, Devise-Two-Factor versions >= 2.2.0 & < 6.0.0 generate TOTP shared secrets that are 120 bits instead of the 128-bit minimum defined by RFC 4226. Using a shared secret shorter than the minimum to generate a multi-factor authentication code could make it easier for an attacker to guess the shared secret and generate valid TOTP codes.

Affected products

• Tinfoilsecurity Devise-Two-Factor: from 4.0.0, before 6.0.0 (fixed in 6.0.0); version 1.0.0 only

Published 2024-09-17. Last modified 2026-06-17.