CVE-2026-100678

MEDIUMCVSS 6.5

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.

Published 2026-09-26 · last modified 2026-09-26

Full record at NVD ↗

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Ncerio by BeyondNets · data from NVD, CISA KEV, EPSS.