Is CVE-2022-4939 actively exploited?

No active exploitation of CVE-2022-4939 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-4939 be exploited remotely?

Yes. CVE-2022-4939 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-4939?

CVE-2022-4939 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2022-4939

CWE-862Published: April 5, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

THe WCFM Membership plugin for WordPress is vulnerable to privilege escalation in versions up to, and including 2.10.0, due to a missing capability check on the wp_ajax_nopriv_wcfm_ajax_controller AJAX action that controls membership settings. This makes it possible for unauthenticated attackers to modify the membership registration form in a way that allows them to set the role for registration to that of any user including administrators. Once configured, the attacker can then register as an administrator.

NVD Source

Risk Analysis

The WCFM Membership plugin for WordPress contains a flaw that allows unauthenticated attackers to register as administrators. Given the 9.8 CVSS score, this critical vulnerability poses a severe threat to site integrity and control.

There is no known public exploit for this vulnerability, and it is not listed in the CISA KEV. It is remotely exploitable due to the lack of necessary capability checks.

Recommended Action

Update the WCFM Membership plugin to a version beyond 2.10.0. Administrators should also audit user roles to identify any unauthorized accounts created via this vector.

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-2022-4939 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.