PT-2026-51036 · Cap Go · Cap-Go

Nancyhunter191 · Published 2026-06-19 · Updated 2026-06-19 · CVE-2026-56073

Positive Technologies (AI Summary)

CVSS v3.1

9.4

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Cap-go versions prior to 12.128.2

Description An authentication bypass exists in the OTP (One-Time Password) verification process. Attackers can intercept OTP verification requests and manipulate HTTP responses to falsely indicate that verification was successful. This allows for the unauthorized enablement of two-factor authentication (2FA) and subsequent account takeover.

Recommendations Update to version 12.128.2 or later.

Fix

Insufficient Verification of Data Authenticity

Weakness Enumeration

CWE-345

Related Identifiers

CVE-2026-56073

Affected Products

Cap-Go

References · 4

• https://github.com/Cap-go/capgo/security/advisories/GHSA-x2gq-85v8-j9v4 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-56073 · Security Note
• https://twitter.com/VulmonFeeds/status/2068119153160925320 · Twitter Post
• https://vulncheck.com/advisories/cap-go-otp-bypass-via-response-manipulation-in-email-verification · Note