CVE-2026-100679 (GCVE-0-2026-100679)
Vulnerability from cvelistv5 – Published: 2026-09-26 13:23 – Updated: 2026-09-28 18:03
VLAI
EPSS
VEX
Title
stoatchat before 0.15.5 MFA Bypass via Cross-Account Ticket
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 18:01 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/stoatchat/stoatchat/security/a… | vendor-advisory |
| https://www.vulncheck.com/advisories/stoatchat-be… | third-party-advisory |
Impacted products
Date Public
2026-09-11 00:00
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