Is CVE-2017-20208 actively exploited?

No active exploitation of CVE-2017-20208 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-20208 be exploited remotely?

Yes. CVE-2017-20208 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-20208?

CVE-2017-20208 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2017-20208

CRITICAL

CVE-2017-20208

CWE-502Published: October 18, 2025· Updated: Jun 17, 2026

9.8

CVSS v3.1

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.

NVD Source

Risk Analysis

This critical PHP Object Injection vulnerability in the RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login plugin for WordPress, affecting all versions up to 3.7.9.3 (exclusive), allows unauthenticated attackers to inject a PHP Object. This flaw, via deserialization of untrusted input from the is_expired_by_date() function, can lead to remote file fetching and installation on the site. The CVSS score of 9.8 highlights the severe impact and ease of exploitation, though no EPSS score is available to indicate exploitation likelihood.

No public exploit is currently known for this vulnerability. This flaw is remotely exploitable over the network without requiring any user interaction.

Recommended Action

Organizations using the RegistrationMagic plugin should update to version 3.7.9.3 or later. Implement robust input validation and avoid deserializing untrusted data.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2017-20208 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-502): Insecure deserialization vulnerabilities allow attackers to inject malicious objects during deserialization, potentially enabling remote code execution.