Is CVE-2026-4977 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-4977, but active exploitation has not been confirmed.

Can CVE-2026-4977 be exploited remotely?

Yes. CVE-2026-4977 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4977?

CVE-2026-4977 has a CVSS score of 4.3 (MEDIUM).

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MEDIUMPOC

CVE-2026-4977

CWE-862Published: April 10, 2026· Updated: Apr 13, 2026

4.3

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.9th

Official Description

The UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WordPress is vulnerable to Improper Access Control in all versions up to, and including, 1.2.58 This is due to insufficient field-level permission validation in the upload_file_remove() AJAX handler where the $htmlvar parameter is not validated against a whitelist of allowed fields or checked against the field's for_admin_use property. This makes it possible for authenticated attackers, with subscriber-level access and above, to clear or reset any restricted usermeta column for their own user record, including fields marked as "For admin use only", bypassing intended field-level access restrictions.

NVD Source

Technical Analysis

CVE-2026-4977 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2026-4977. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.