How severe is CVE-2017-20208?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Metagauss Registrationmagic – Custom Registration Forms, User Registration, Payment, And Login

CVE-2017-20208

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…

Vulnerability class: Insecure Deserialization

EPSS: 0.005 (67.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Metagauss Registrationmagic – Custom Registration Forms, User Registration, Payment, And Login — versions 0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

Frequently asked questions

What is CVE-2017-20208?: CVE-2017-20208 is a critical-severity vulnerability in Metagauss Registrationmagic – Custom Registration Forms, User Registration, Payment, And Login, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-10-18.
How severe is CVE-2017-20208?: Critical severity. CVSS v3 base score is 9.8 out of 10.