CVE-2026-56073CWE-345

Cap-go - OTP Bypass via Response Manipulation in Email Verification

Critical · published June 19, 2026

CVSS v4.0
9.3
EPSS
0%
Percentile
18.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
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
EPSS
0.00270 · 18.1th percentile
Weakness
CWE-345 · Insufficient Verification of Data Authenticity
Published
2026-06-19T21:39Z
EPSS history
Timeline
  • 19 JUN 21:39Z
    Cap-go - OTP Bypass via Response Manipulation in Email Verification
    cvelistv5