CVE-2017-20208: The RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login plugin for WordP

Q: How do I fix CVE-2017-20208?

registrationmagic: upgrade to 3.7.9.3. Exact commands for each OS are on this page.

Q: Is CVE-2017-20208 being exploited?

CVE-2017-20208 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2017-20208 affect?

CVE-2017-20208 affects registrationmagic. Severity is critical (CVSS 9.8). 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 t

Q: How urgent is CVE-2017-20208?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2017-20208 is a critical-severity flaw (CVSS 9.8) affecting registrationmagic. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 th

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-502
Published	2025-10-18
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: metagauss

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-10-18 04:15 UTCPublished CVE record published
2026-06-17 01:15 UTCUpdated Record last modified

metagauss registrationmagic UPGRADE

Affected: < 3.7.9.3

Fixed in: 3.7.9.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy registrationmagic || rpm -q registrationmagic || registrationmagic --version

2. UPGRADE to 3.7.9.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade registrationmagic

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade registrationmagic

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-20208?

registrationmagic: upgrade to 3.7.9.3. Exact commands for each OS are on this page.

Is CVE-2017-20208 being exploited?

CVE-2017-20208 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-20208 affect?

CVE-2017-20208 affects registrationmagic. Severity is critical (CVSS 9.8). 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 t

How urgent is CVE-2017-20208?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities · PHP vulnerabilities

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References

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