CVE-2026-56073

Critical

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.

SeverityCritical

CVSS9.4

Exploit probability—

ProductCap-go Capgo

PublishedJun 19, 2026

First seenJun 19, 2026

Weakness typeCWE-345CWE-345

How to fix

Update

Cap-go capgo12.128.2 or later

Vendor advisories

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

Affected products

Product	Affected versions	Fixed in
Cap-go capgo	v < 12.128.2	12.128.2

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