PT-2026-99349 · Stoatchat · Stoatchat
CVSS v4.0
8.3
High
| Vector | AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N |
Name of the Vulnerable Software and Affected Versions
stoatchat versions prior to 0.15.5
Description
Insufficient enforcement of account-level attempt limits during MFA login challenges allows attackers with a valid password to guess TOTP (Time-based One-Time Password) codes. Because rate limiting is only applied based on IP addresses, attackers can bypass these restrictions by distributing guesses across multiple IP addresses and reusing MFA challenge tickets across failed attempts to gain unauthorized account access.
Recommendations
Update to version 0.15.5 or later.
Exploit
Fix
Improper Restriction of Excessive Authentication Attempts
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Weakness Enumeration
Related Identifiers
Affected Products
Stoatchat