CVE-2026-77826

RegistrationMagic 5.0.1.8 - 6.0.9.8 - Unauthenticated Authentication Bypass via Missing Facebook Token Audience Validation

Published Sep 5, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Registrationmagic
Registrationmagic registrationmagic
Wordpress
Wordpress wordpress
Vendors & Products Registrationmagic
Registrationmagic registrationmagic
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Weaknesses CWE-287
Type Values Removed Values Added
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.
Title RegistrationMagic 5.0.1.8 - 6.0.9.8 - Unauthenticated Authentication Bypass via Missing Facebook Token Audience Validation
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Sep 6, 2026, 10:41 AM
Reserved
Aug 21, 2026, 2:42 PM
Status
Deferred
Published
Sep 5, 2026, 7:17 AM
Modified
Sep 8, 2026, 7:09 PM