RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login <= 5.3.0.0 - Authenticated (Subscriber+) Privilege Escalation
Strategic Overview
- Status
- Patched in 5.3.1.0
- Affected Plugin
- RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login
- Affected Version
<= 5.3.0.0- CVSS
- 8.8High
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2024-1991
At a glance
CVE-2024-1991 is a high-severity Missing Authorization vulnerability in the RegistrationMagic WordPress plugin, affecting versions <= 5.3.0.0. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 5.3.1.0; sites on affected versions should update now. Disclosed March 2024, reported by Krzysztof Zając.
Vulnerability Overview
The RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login plugin for WordPress is vulnerable to privilege escalation due to a missing capability check on the update_users_role() function in all versions up to, and including, 5.3.0.0. This makes it possible for authenticated attackers, with subscriber-level access and above, to escalate their privileges to that of an administrator
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-862: Missing Authorization
RegistrationMagic <= 5.3.0.0 carries this weakness at update_users_role(), and reaching it takes an account at Subscriber level or above. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.
Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For RegistrationMagic the fix is 5.3.1.0: builds <= 5.3.0.0 are affected, anything from 5.3.1.0 onward is not.
Remediation
Update to version 5.3.1.0, or a newer patched version
How does WordSec protect against this?
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: RegistrationMagic 5.3.1.0 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login
- 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 - 8.8CVE-2026-12158: RegistrationMagic CSRF to Privilege Escalation
CVE-2026-12158 - 8.8CVE-2024-1990: RegistrationMagic SQL Injection
CVE-2024-1990
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