Critical 9.4Published Jun 19, 2026

CVE-2026-56073Cap-go - OTP Bypass via Response Manipulation in Email Verification

Updated under an hour ago (Oct 26, 2026, 4:20 PM ET)

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It affects Cap-go capgo. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Cap-go capgo

Exploited in the last 30 days

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: 9.4 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Weakness (CWE): CWE-345
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Jun 22, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Cap-go capgo cap_go:capgo (from the name)	before 12.128.2; 12.128.2 not affected	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.