CVE-2026-56073

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 4.0

9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

CVSS 3.1

9.4CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

EPSS

0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-25)

CWE

CWE-345

Published

2026-06-19

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

References

• https://github.com/Cap-go/capgo/security/advisories/GHSA-x2gq-85v8-j9v4
• 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

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