RegistrationMagic <= 6.0.9.1 - Cross-Site Request Forgery to Privilege Escalation via 'rmc_assign_user_role_action' Parameter
Strategic Overview
- Status
- Patched in 6.0.9.2
- Affected Plugin
- RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login
- Affected Version
<= 6.0.9.1- CVSS
- 8.8High
- Weakness type
- CWE-352 · Cross-Site Request Forgery (CSRF)
- CVE
CVE-2026-12158
At a glance
CVE-2026-12158 is a high-severity Cross-Site Request Forgery (CSRF) vulnerability in the RegistrationMagic WordPress plugin, affecting versions <= 6.0.9.1. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). The issue is fixed in version 6.0.9.2; sites on affected versions should update now. Disclosed June 2026, reported by Chloe Chamberland.
Vulnerability Overview
The RegistrationMagic – User Registration Forms Plugin plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 6.0.9.1. This is due to missing or incorrect nonce validation on the process_request function. This makes it possible for unauthenticated attackers to escalate the privileges of an arbitrary form submitter to administrator by creating a malicious Chronos automation task that is executed via WordPress cron via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-352: Cross-Site Request Forgery (CSRF)
Reaching this weakness in RegistrationMagic <= 6.0.9.1 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.
An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For RegistrationMagic the fix is 6.0.9.2: builds <= 6.0.9.1 are affected, anything from 6.0.9.2 onward is not.
Remediation
Update to version 6.0.9.2, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to RegistrationMagic: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: RegistrationMagic 6.0.9.2 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login
- 9.9CVE-2020-9456: RegistrationMagic Privilege Escalation
CVE-2020-9456 - 9.9CVE-2020-9457: RegistrationMagic Settings Import
CVE-2020-9457 - 9.8CVE-2026-24373: RegistrationMagic Authentication Bypass
CVE-2026-24373 - 9.8CVE-2025-15403: RegistrationMagic <= 6.0.7.1 Privilege Escalation
CVE-2025-15403 - 9.8CVE-2024-10508: RegistrationMagic Privilege Escalation
CVE-2024-10508 - 9.8CVE-2023-2499: RegistrationMagic <= 5.2.1.0 Authentication Bypass
CVE-2023-2499 - 9.8CVE-2021-4073: RegistrationMagic <= 5.0.1.7 Authentication Bypass
CVE-2021-4073 - 9.8CVE-2017-20208: RegistrationMagic - Custom… PHP Object Injection
CVE-2017-20208
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