CVE-2026-77826 Auth bypass in RegistrationMagic
Unauthenticated attackers can bypass authentication by exploiting missing Facebook token audience validation, allowing them to log in as existing users or create new accounts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-77826?
CVE-2026-77826 is a high-severity authentication bypass vulnerability in Unknown RegistrationMagic, published on 5 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The RegistrationMagic WordPress plugin before 6.0.9.9 does not verify which application a Facebook access token was issued to before accepting it as proof of identity, allowing unauthenticated attackers to log in as an existing user whose token they can obtain, or to create and log into a new account even when user registration is disabled.
Weakness: CWE-287
Which versions are affected by CVE-2026-77826?
How do I fix CVE-2026-77826?
No fix has been published for CVE-2026-77826 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-2026-77826 being exploited?
There is no known exploitation of CVE-2026-77826 in the wild and no public exploit code.
Sources
Also known as GHSA-99w4-v9vm-vmmw.