CVE-2026-56308 Capgo - Insufficient Authentication in Email Change Endpoint
Attackers with valid sessions can change account emails without re-authentication, enabling account takeover and bypassing multi-factor authentication.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-56308?
CVE-2026-56308 is a high-severity authentication bypass vulnerability in Capgo, published on 12 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Capgo before 12.128.2 allows email address changes without requiring current password re-authentication or verification of the existing email address. An attacker with access to a valid session cookie or authenticated browser can change the account email to gain control of account recovery and bypass multi-factor authentication protections.
Weakness: CWE-640
Which versions are affected by CVE-2026-56308?
How do I fix CVE-2026-56308?
No fix has been published for CVE-2026-56308 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-56308 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-56308 exists.
Sources
Also known as GHSA-9px4-w25f-mvm4, GHSA-gxf7-q22c-vmrj.