CVE-2017-20208 json
RegistrationMagic - Custom Registration Forms <= 3.7.9.2 - PHP Object Injection
published 2025-10-18 12 mo ago modified 2026-06-17 4 mo ago also EUVD-2017-18922
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- metagauss RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login 3.7.9.3
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 12 mo ago
Exploit prediction
0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | 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 User Login
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
- Technology feeds
References
-
plugins.trac.wordpress.org
/changeset/1733274/custom-registration-form-builder-with-submission-manager
patch
-
wordfence.com
/threat-intel/vulnerabilities/id/c2b79193-f8fc-4ea2-8973-fe292cfb926b?source=cve
technical-description
-
wordfence.com
/blog/2017/10/3-zero-day-plugin-vulnerabilities-exploited-wild/
press/media-coverage, third-party-advisory
Sources
- CVE List CVE-2017-20208
- NVD CVE-2017-20208
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.