How severe is CVE-2017-20208?

CVE-2017-20208 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-20208 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-20208?

CVE-2017-20208 affects Metagauss Registrationmagic. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-20208?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2017-20208 have an EU (EUVD) identifier?

Yes. CVE-2017-20208 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-18922.

When was CVE-2017-20208 published?

CVE-2017-20208 was published on 2025-10-18 and last updated on 2026-06-17.

CVE-2017-20208

CVE-2017-20208 is a critical-severity vulnerability in Metagauss Registrationmagic with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2017-18922
Weakness: CWE-502
Affected product: Metagauss Registrationmagic
Published: 2025-10-18
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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 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.
How severe is CVE-2017-20208?: CVE-2017-20208 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-20208 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-20208?: CVE-2017-20208 affects Metagauss Registrationmagic. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-20208?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2017-20208 have an EU (EUVD) identifier?: Yes. CVE-2017-20208 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-18922.
When was CVE-2017-20208 published?: CVE-2017-20208 was published on 2025-10-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:metagauss:registrationmagic:*:*:*:*:*:wordpress:*:*

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