CVE-2026-100679
stoatchat before 0.15.5 MFA Bypass via Cross-Account Ticket
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
stoatchat before 0.15.5 fails to validate that MFA tickets belong to the authenticated user, allowing attackers to bypass MFA by using their own valid ticket with another user's session token. Attackers can obtain a ticket from their own account and use it with a victim's session token to disable TOTP, view recovery codes, or perform other sensitive operations without providing the victim's credentials.
| CWE | CWE-639 |
| Vendor | stoatchat |
| Product | stoatchat |
| Published | Sep 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
stoatchat / stoatchat
0 < 0.15.5