Vulnerability DatabaseCVE-2026-56073
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CVE-2026-56073
Published:June 19, 2026
Updated:August 04, 2026
Cap-go before 12.128.2 contains an authentication bypass vulnerability in OTP verification that allows attackers to bypass email verification by modifying server responses. Attackers can intercept OTP verification requests and manipulate HTTP responses to falsely mark verification successful, enabling unauthorized 2FA enablement and account takeover.
Affected Packages
https://github.com/Cap-go/capgo.git (GITHUB):
Affected version(s) >=asc-key-helper-1.1.0-rc.2 <12.128.2
Fix Suggestion:
Update to version 12.128.2
Related Resources (4)
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56073.json
https://www.vulncheck.com/advisories/cap-go-otp-bypass-via-response-manipulation-in-email-verification
https://github.com/Cap-go/capgo/security/advisories/GHSA-x2gq-85v8-j9v4
https://nvd.nist.gov/vuln/detail/CVE-2026-56073
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CVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
LOW
Weakness Type (CWE)
Insufficient Verification of Data Authenticity
CWE-345
EPSS
Base Score:
0.27