CVE-2017-20208 RegistrationMagic - Custom Registration Forms <= 3.7.9.2 - PHP Object Injection
Unauthenticated attackers can exploit PHP object injection to execute arbitrary code via a POP chain in the RegistrationMagic WordPress plugin.
- 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-2017-20208?
CVE-2017-20208 is a critical unsafe deserialization vulnerability in metagauss RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login, published on 18 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login plugin for WordPress is vulnerable to PHP Object Injection in all versions up to 3.7.9.3 (exclusive) via deserialization of untrusted input from the is_expired_by_date() function. This makes it possible for unauthenticated attackers to inject a PHP Object. The additional presence of a POP chain allows attackers to fetch a remote file and install it on the site.
Weakness: CWE-502
Which versions are affected by CVE-2017-20208?
It affects 1 product.
Products include Metagauss Registrationmagic.
How do I fix CVE-2017-20208?
No fix has been published for CVE-2017-20208 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2017-20208 being exploited?
There is no known exploitation of CVE-2017-20208 in the wild and no public exploit code.
Other vulnerabilities in metagauss RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login
- CVE-2024-10508 Auth bypass in RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login
- CVE-2023-2499 RegistrationMagic <= 5.2.1.0 - Authentication Bypass
- CVE-2021-4073 RegistrationMagic <= 5.0.1.7 Authentication Bypass
- CVE-2024-1990 SQL injection in RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login
- CVE-2024-1991 Privilege escalation in RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login
Sources
Also known as GHSA-5g96-pc88-j7fx.