CVE-2026-56081
Cap-go - Account Lockout via 2FA Misconfiguration on Unverified Email
- State
- Published
- Severity
- 9.3 Critical
- Published
- Jun 19, 2026
- Updated
- Jun 22, 2026
- Reserved
- Jun 18, 2026
Description
Cap-go before 12.128.2 contains an authentication logic flaw that lets an attacker register and control an account bound to a victim's email address before that email is verified. By enabling two-factor authentication on the pre-registered account, the attacker gains control over the account claimed under the victim's identity, allowing them to read and modify its state and enforce organization-level policies, while the legitimate user is denied access to the account tied to their own email.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 9.1 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | VulnCheck |
Weaknesses
- CWE-640 Weak Password Recovery Mechanism for Forgotten Password
Affected Products
| Product | Versions |
|---|---|
capgoCap-go |
|
References
- GHSA Advisory GHSA-j4cx-5pw6-5v5jvendor-advisory
- VulnCheck Advisory: Cap-go - Account Lockout via 2FA Misconfiguration on Unverified Emailthird-party-advisory
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