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CVE-2026-95866

7.2 · HIGH

The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Avatar Field in all versions up…

Published Sep 25, 2026CWE-79EPSS 0.26%

Overview

CVE-2026-95866 is a high-severity vulnerability. It was published on September 25, 2026 and has a CVSS 3.1 base score of 7.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Avatar Field in all versions up to, and including, 4.0.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The zero-length multipart file branch in wppb_save_avatar_value() writes the raw request value directly to user meta, bypassing the wppb_save_attachment_id()/wppb_verify_attachment_id() validation path; the stored payload is later adopted as a WordPress attachment URL and rendered unescaped by wppb_default_fields_make_upload_button() when an administrator views the affected account.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/profile-builder/tags/4.0.2/front-end/default-fields/avatar/avatar.php#L127Refplugins.trac.wordpress.org/browser/profile-builder/tags/4.0.2/front-end/default-fields/avatar/avatar.php#L67Refplugins.trac.wordpress.org/browser/profile-builder/tags/4.0.2/front-end/default-fields/upload/upload_helper_functions.php#L286Refplugins.trac.wordpress.org/changeset?reponame=&old=3708665%40profile-builder&new=3708665%40profile-builderRefwww.wordfence.com/threat-intel/vulnerabilities/id/68cef86f-3a6a-47c4-a092-de3bb40ac157?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-95866?

CVE-2026-95866 is a high-severity vulnerability. It was published on September 25, 2026 and has a CVSS 3.1 base score of 7.2 (HIGH).

How severe is CVE-2026-95866?

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-95866?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-95866?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-95866 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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