CVE-2026-56073

CRITICAL EPSS 8.6%

Published Jun 19, 20261w ago · Modified Jun 22, 20261w ago

9.3 CVSS 4.0

Critical

Published Jun 19, 2026 1w ago

Last Modified Jun 22, 2026 1w ago

Description

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.

CVSS Details

Base Score

9.3

Exploitability

—

Impact

—

Vector string

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/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

8.6% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-345

References 2

github.com https://github.com/Cap-go/capgo/security/advisories/GHSA-x2gq-85v8-j9v4
vulncheck.com https://www.vulncheck.com/advisories/cap-go-otp-bypass-via-response-manipulation-in-email-verification

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.