๐Ÿ” CVE Alert

CVE-2026-56081

CRITICAL 9.1

Cap-go - Account Lockout via 2FA Misconfiguration on Unverified Email

CVSS Score
9.1
EPSS Score
0.0%
EPSS Percentile
0th

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.

CWE CWE-640
Vendor cap-go
Product capgo
Published Jun 19, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

Affected Versions

Cap-go / capgo
0 < 12.128.2

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
github.com: https://github.com/Cap-go/capgo/security/advisories/GHSA-j4cx-5pw6-5v5j vulncheck.com: https://www.vulncheck.com/advisories/cap-go-account-lockout-via-2fa-misconfiguration-on-unverified-email