WP Customizer Security & Risk Analysis

wordpress.org/plugins/wp-customizer

Easily load site specific functions, scripts and CSS files into your site without editing your theme's functions.php or other source files.

20 active installs v1.0.2 PHP + WP 4.8+ Updated Nov 9, 2017
customisecustomizefunctionsscriptswp-customizer
85
A · Safe
CVEs total0
Unpatched0
Last CVENever
Safety Verdict

Is WP Customizer Safe to Use in 2026?

Generally Safe

Score 85/100

WP Customizer has no known CVEs and is actively maintained. It's a solid choice for most WordPress installations.

No known CVEs Updated 8yr ago
Risk Assessment

The 'wp-customizer' plugin v1.0.2 exhibits a mixed security posture. On one hand, the absence of known vulnerabilities and CVEs, along with the lack of an apparent attack surface via AJAX, REST API, shortcodes, or cron events, suggests a generally low risk of exploitation through common entry points. The use of prepared statements for its single SQL query is also a positive sign. However, several critical concerns emerge from the static code analysis. The fact that 100% of the 17 output operations are not properly escaped presents a significant risk of Cross-Site Scripting (XSS) vulnerabilities. Furthermore, the taint analysis revealing two flows with unsanitized paths, even if not classified as critical or high severity, warrants attention as these could potentially lead to unintended behavior or security breaches if combined with other factors. The plugin's vulnerability history is clean, which is encouraging, but this could also indicate limited testing or a very small user base, not necessarily guaranteed future security.

Key Concerns

  • All outputs are unescaped, leading to XSS risk
  • Taint flows with unsanitized paths detected
  • No capability checks implemented
Vulnerabilities
None known

WP Customizer Security Vulnerabilities

No known vulnerabilities — this is a good sign.
Code Analysis
Analyzed Mar 16, 2026

WP Customizer Code Analysis

Dangerous Functions
0
Raw SQL Queries
0
1 prepared
Unescaped Output
17
0 escaped
Nonce Checks
3
Capability Checks
0
File Operations
1
External Requests
0
Bundled Libraries
0

SQL Query Safety

100% prepared1 total queries

Output Escaping

0% escaped17 total outputs
Data Flows
2 unsanitized

Data Flow Analysis

2 flows2 with unsanitized paths
admin_print_footer_scripts (includes\class-wp-customizer-pointers.php:47)
Source (user input) Sink (dangerous op) Sanitizer Transform Unsanitized Sanitized
Attack Surface

WP Customizer Attack Surface

Entry Points0
Unprotected0
Maintenance & Trust

WP Customizer Maintenance & Trust

Maintenance Signals

WordPress version tested4.8.28
Last updatedNov 9, 2017
PHP min version
Downloads4K

Community Trust

Rating100/100
Number of ratings2
Active installs20
Developer Profile

WP Customizer Developer Profile

vicchi

4 plugins · 70 total installs

84
trust score
Avg Security Score
85/100
Avg Patch Time
30 days
View full developer profile
Detection Fingerprints

How We Detect WP Customizer

Patterns used to identify this plugin on WordPress sites during automated security audits and web crawling.

Asset Fingerprints

Asset Paths
/wp-content/plugins/wp-customizer/includes/wp-plugin-base/wp-plugin-base.php
Script Paths
/wp-content/plugins/wp-customizer/includes/class-wp-customizer-admin.php/wp-content/plugins/wp-customizer/includes/class-wp-customizer-loader.php/wp-content/plugins/wp-customizer/includes/class-wp-customizer-pointers.php/wp-content/plugins/wp-customizer/includes/class-wp-customizer-upgrade.php/wp-content/plugins/wp-customizer/includes/class-wp-customizer.php

HTML / DOM Fingerprints

HTML Comments
<!-- The way is shut. It was made by those who are dead, and the dead keep it. The way is shut. -->
Data Attributes
data-wp-customizer-tab
JS Globals
window.wp_customizer_admin_data
FAQ

Frequently Asked Questions about WP Customizer