CVE-2026-109312 Grav Login Plugin 2.7.0 before 3.9.9 2FA Bypass via Profile Update Form
Attackers with a victim's password can bypass 2FA via profile updates to disable two-factor authentication and take over the account.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109312?
CVE-2026-109312 is a high-severity authentication bypass vulnerability in getgrav grav-plugin-login, published on 12 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Grav Login plugin 2.7.0 before 3.9.9 contains an authentication bypass in processUserProfile(), which checks that the session user exists but not that a pending front-end 2FA session is fully authorized. Attackers with a victim's password who can publish a page form without an access rule can invoke update_user before completing 2FA to disable twofa_enabled and take over the account.
Weakness: CWE-287
Which versions are affected by CVE-2026-109312?
How do I fix CVE-2026-109312?
No fix has been published for CVE-2026-109312 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-2026-109312 being exploited?
There is no known exploitation of CVE-2026-109312 in the wild and no public exploit code.
Sources
Also known as GHSA-5rph-jqcf-2x36, GHSA-m37v-wpv7-2x4p.