CVE-2026-100678 — stoatchat before 0.15.5 MFA Brute Force via Insufficient Rate Limiting
stoatchat before 0.15.5 fails to enforce account-level attempt limits on MFA login challenges, allowing attackers who know a password to guess TOTP codes with only IP-based rate…
Published: 2026-09-26 · CVSS: 8.3 · CVSS 4.0
stoatchat before 0.15.5 fails to enforce account-level attempt limits on MFA login challenges, allowing attackers who know a password to guess TOTP codes with only IP-based rate limiting. Attackers can reuse MFA challenge tickets across multiple failed attempts and distribute guesses across IP addresses to bypass rate limiting and gain account access.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7