Vulnerability in Cap-Go Capgo
CVE-2026-56081
Cap-go before 12.128.2 contains an authentication logic flaw that lets an attacker register and control an account bound to a victim's email address before that email is verified. By enabling two-factor authentication on the pre-registered account, the attacker gains control over the account claimed under the victim's identity, allowing them to read and modify its state and enforce organization-level policies, while the legitimate user is denied access to the account tied to their own email.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.006 (46.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Cap-Go Capgo — versions 0, 12.128.2
Weakness classification (CWE)
References
- github.com/Cap-go/capgo/security/advisories/GHSA-j4cx-5pw6-5v5j (vendor-advisory)
- www.vulncheck.com/advisories/cap-go-account-lockout-via-2fa-misconfiguration-on… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56081?
- CVE-2026-56081 is a critical-severity vulnerability in Cap-Go Capgo, classified under Weak Password Recovery Mechanism for Forgotten Password. CVSS score: 9.1/10. Published 2026-06-19.
- How severe is CVE-2026-56081?
- Critical severity. CVSS v3 base score is 9.1 out of 10.