CVE-2026-56081
CRITICAL EPSS 27.0%
Published Jun 19, 20261w ago · Modified Jun 22, 20261w ago
9.3 CVSS 4.0
Published Jun 19, 2026 1w ago
Last Modified Jun 22, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
27.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-640
References 2
- 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
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.