CVE-2026-56081 Cap-go - Account Lockout via 2FA Misconfiguration on Unverified Email
Attackers can hijack accounts via unverified email registration and 2FA, locking out legitimate users and modifying data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-56081?
CVE-2026-56081 is a critical vulnerability in Cap-go capgo, published on 19 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-640
Which versions are affected by CVE-2026-56081?
How do I fix CVE-2026-56081?
No fix has been published for CVE-2026-56081 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-56081 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-56081 exists.
Sources
Also known as GHSA-9wvh-mc26-36xw, GHSA-j4cx-5pw6-5v5j.