CVE-2026-12597 LoginPress Pro <= 6.2.3 - Unauthenticated Authentication Bypass via Unverified OAuth Email via GitHub OAuth Callback
Unauthenticated attackers can bypass authentication and log in as any user, including administrators, by exploiting unverified email handling in the GitHub OAuth callback.
- 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-2026-12597?
CVE-2026-12597 is a high-severity authentication bypass vulnerability in LoginPress Pro, published on 9 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The LoginPress Pro plugin for WordPress is vulnerable to Authentication Bypass via the GitHub OAuth callback in versions up to, and including, 6.2.3. The vulnerability exists in the loginpress_on_github_login() function, which blindly trusts the first element (profile[0]['email']) of the array returned by GitHub's /user/emails endpoint as an account-binding identifier without verifying that the email carries a verified === true status. This makes it possible for unauthenticated attackers to log in as any existing WordPress user, including administrators, by adding an unverified email address matching a local account to their GitHub profile and triggering the OAuth callback via a crafted code parameter — causing the plugin to call get_user_by('email', ...) and establish an authenticated session for the matched account. Practical exploitation is conditional on GitHub returning the attacker-added unverified email at index 0 of the /user/emails response, as GitHub typically prioritizes the primary verified address first; nonetheless, the absence of any email verification check in the plugin constitutes a fundamental authentication bypass flaw.
Weakness: CWE-287
Which versions are affected by CVE-2026-12597?
How do I fix CVE-2026-12597?
No fix has been published for CVE-2026-12597 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-2026-12597 being exploited?
There is no known exploitation of CVE-2026-12597 in the wild and no public exploit code.
Sources
Also known as GHSA-g678-2jj9-7fmj.