CVE-2026-66456
Received Received - Intake

Subscriber XSS in Profile Extra Fields WordPress Plugin

Publication date: 2026-08-13

Last updated on: 2026-08-13

Assigner: Patchstack

Description
Subscriber Cross Site Scripting (XSS) in Profile Extra Fields by BestWebSoft <= 1.3.4 versions.

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Meta Information

Published
2026-08-13
Last Modified
2026-08-13
Generated
2026-08-13
AI Q&A
2026-08-13
EPSS Evaluated
N/A
NVD
CVE-2026-66456
EUVD
EUVD-2026-57876

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
bestwebsoft profile_extra_fields to 1.3.4 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a Subscriber Cross Site Scripting (XSS) vulnerability found in the Profile Extra Fields plugin by BestWebSoft, affecting versions up to and including 1.3.4. XSS allows attackers to inject malicious scripts into web pages viewed by other users.

Detection Guidance

To detect this vulnerability, inspect WordPress sites using Profile Extra Fields by BestWebSoft <= 1.3.4 for XSS in subscriber-accessible fields. Check for unusual input handling in profile forms and review JavaScript execution in user-provided data.

Impact Analysis

An attacker could exploit this to steal user sessions, deface websites, or redirect users to malicious sites. Users with subscriber-level access could potentially escalate privileges or perform actions on behalf of other users.

Compliance Impact

This XSS vulnerability could lead to unauthorized data access or modification, violating GDPR's integrity and confidentiality principles. For HIPAA, it may risk exposing protected health information if exploited.

Mitigation Strategies

Update Profile Extra Fields by BestWebSoft to the latest version. If no update is available, disable the plugin immediately. Implement input validation and output encoding for user-submitted data in WordPress forms.

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