Theme Check Security & Risk Analysis

wordpress.org/plugins/theme-check

A simple and easy way to test your theme for all the latest WordPress standards and practices. A great theme development tool!

20K active installs v20231220 PHP + WP 3.7+ Updated Dec 20, 2023
guidelinesthemeswordpress-org
85
A · Safe
CVEs total0
Unpatched0
Last CVENever
Safety Verdict

Is Theme Check Safe to Use in 2026?

Generally Safe

Score 85/100

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

No known CVEs Updated 2yr ago
Risk Assessment

The theme-check plugin exhibits a generally strong security posture, particularly in its avoidance of common web vulnerabilities. The absence of any recorded CVEs, unpatched vulnerabilities, or identified dangerous functions is a significant strength. The code analysis shows a commendable approach to security, with all SQL queries using prepared statements and a high percentage of output properly escaped. Furthermore, the plugin demonstrates good practice by implementing nonce and capability checks, indicating an effort to protect against unauthorized actions.

Despite the positive indicators, there are minor areas for concern. The taint analysis reveals two flows with unsanitized paths, which, while not classified as critical or high severity in this instance, represent a potential risk. These flows should be meticulously reviewed to ensure they cannot be exploited under any circumstances. The presence of file operations without further context in the static analysis also warrants attention; understanding the nature of these operations and ensuring they are properly secured is crucial. Overall, theme-check appears to be a well-developed and secure plugin, with the identified taint flows being the primary area requiring focused investigation for complete risk mitigation.

Key Concerns

  • Flows with unsanitized paths found
  • File operations present in code
  • 79% of output properly escaped
Vulnerabilities
None known

Theme Check Security Vulnerabilities

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

Theme Check Code Analysis

Dangerous Functions
0
Raw SQL Queries
0
0 prepared
Unescaped Output
12
45 escaped
Nonce Checks
1
Capability Checks
1
File Operations
3
External Requests
0
Bundled Libraries
0

Output Escaping

79% escaped57 total outputs
Data Flows
2 unsanitized

Data Flow Analysis

2 flows2 with unsanitized paths
themecheck_do_page (theme-check.php:37)
Source (user input) Sink (dangerous op) Sanitizer Transform Unsanitized Sanitized
Attack Surface

Theme Check Attack Surface

Entry Points0
Unprotected0
WordPress Hooks 3
actionadmin_inittheme-check.php:15
actionadmin_menutheme-check.php:16
filterextra_theme_headerstheme-check.php:42
Maintenance & Trust

Theme Check Maintenance & Trust

Maintenance Signals

WordPress version tested6.4.8
Last updatedDec 20, 2023
PHP min version
Downloads2.5M

Community Trust

Rating96/100
Number of ratings195
Active installs20K
Developer Profile

Theme Check Developer Profile

WordPress.org

34 plugins · 14.9M total installs

77
trust score
Avg Security Score
97/100
Avg Patch Time
1718 days
View full developer profile
Detection Fingerprints

How We Detect Theme Check

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

Asset Fingerprints

Asset Paths
/wp-content/plugins/theme-check/assets/style.css
Version Parameters
theme-check/assets/style.css?ver=

HTML / DOM Fingerprints

CSS Classes
theme-check
FAQ

Frequently Asked Questions about Theme Check