ZeroV99 Tax Number Security & Risk Analysis

wordpress.org/plugins/zerov99-tax-number

Add a configurable tax identification number (TIN) field to WooCommerce, designed for invoicing, tax compliance, or B2B transactions worldwide

0 active installs v1.0.3 PHP 7.4+ WP 5.6+ Updated Dec 3, 2025
billing-addresscheckout-fieldtax-idtax-numberwoocommerce
100
A · Safe
CVEs total0
Unpatched0
Last CVENever
Safety Verdict

Is ZeroV99 Tax Number Safe to Use in 2026?

Generally Safe

Score 100/100

ZeroV99 Tax Number has no known CVEs and is actively maintained. It's a solid choice for most WordPress installations.

No known CVEs Updated 4mo ago
Risk Assessment

The "zerov99-tax-number" v1.0.3 plugin exhibits a strong security posture based on the provided static analysis. There are no identified AJAX handlers, REST API routes, shortcodes, or cron events, resulting in a zero attack surface. The code also demonstrates good practices with no dangerous functions, all SQL queries using prepared statements, and a high percentage of output being properly escaped. The presence of nonce and capability checks further reinforces its secure coding. The plugin also has no recorded vulnerability history, including CVEs, suggesting a history of secure development or infrequent security audits.

While the static analysis reveals no critical or high-severity issues, and the vulnerability history is clean, the analysis of taint flows is not provided (total flows analyzed: 0). This absence of taint analysis means that potential vulnerabilities related to the handling of unsanitized data, even if not immediately apparent through function calls, cannot be definitively ruled out. However, given the other strong indicators of good security practices, the absence of critical taint flows is a positive sign. Overall, the plugin appears to be secure with excellent adherence to best practices, with the only unknown being the lack of comprehensive taint flow analysis.

Key Concerns

  • Taint analysis data is missing
Vulnerabilities
None known

ZeroV99 Tax Number Security Vulnerabilities

No known vulnerabilities — this is a good sign.
Code Analysis
Analyzed Mar 17, 2026

ZeroV99 Tax Number Code Analysis

Dangerous Functions
0
Raw SQL Queries
0
0 prepared
Unescaped Output
2
21 escaped
Nonce Checks
1
Capability Checks
3
File Operations
0
External Requests
0
Bundled Libraries
0

Output Escaping

91% escaped23 total outputs
Attack Surface

ZeroV99 Tax Number Attack Surface

Entry Points0
Unprotected0
WordPress Hooks 26
filterwoocommerce_settings_tabs_arrayincludes\admin\settings\ZeroV99_TaxNumber_Settings.php:26
actionwoocommerce_settings_zerov99_tax_numberincludes\admin\settings\ZeroV99_TaxNumber_Settings.php:28
actionwoocommerce_update_options_zerov99_tax_numberincludes\admin\settings\ZeroV99_TaxNumber_Settings.php:30
actionadmin_enqueue_scriptsincludes\admin\ZeroV99_TaxNumber_Enqueue_Admin_Assets.php:26
filterwoocommerce_order_formatted_billing_addressincludes\admin\ZeroV99_TaxNumber_Order_Billing_Address_Format.php:20
filterwoocommerce_localisation_address_formatsincludes\admin\ZeroV99_TaxNumber_Order_Billing_Address_Format.php:22
filterwoocommerce_formatted_address_replacementsincludes\admin\ZeroV99_TaxNumber_Order_Billing_Address_Format.php:24
filterwoocommerce_ajax_get_customer_detailsincludes\admin\ZeroV99_TaxNumber_Order_Billing_Fields.php:21
actionwoocommerce_process_shop_order_metaincludes\admin\ZeroV99_TaxNumber_Order_Billing_Fields.php:24
actionwoocommerce_initincludes\public\ZeroV99_TaxNumber_Checkout_Register_TaxNumber_Field.php:23
actionwoocommerce_sanitize_additional_fieldincludes\public\ZeroV99_TaxNumber_Checkout_Register_TaxNumber_Field.php:26
actionwoocommerce_validate_additional_fieldincludes\public\ZeroV99_TaxNumber_Checkout_Register_TaxNumber_Field.php:29
filterwoocommerce_checkout_fieldsincludes\public\ZeroV99_TaxNumber_Classic_Checkout.php:24
actionwoocommerce_checkout_update_order_metaincludes\public\ZeroV99_TaxNumber_Classic_Checkout.php:27
actiontemplate_redirectincludes\public\ZeroV99_TaxNumber_Classic_Checkout.php:30
filterwoocommerce_get_checkout_order_received_urlincludes\public\ZeroV99_TaxNumber_Classic_Checkout.php:33
actionwp_enqueue_scriptsincludes\public\ZeroV99_TaxNumber_Enqueue_Public_Assets.php:25
filterwoocommerce_my_account_my_address_formatted_addressincludes\public\ZeroV99_TaxNumber_MyAccount_Billing_Address.php:25
filterwoocommerce_localisation_address_formatsincludes\public\ZeroV99_TaxNumber_MyAccount_Billing_Address.php:27
filterwoocommerce_formatted_address_replacementsincludes\public\ZeroV99_TaxNumber_MyAccount_Billing_Address.php:29
filterthe_contentincludes\public\ZeroV99_TaxNumber_Remove_Strong_Tags_Addresses.php:27
filterthe_contentincludes\public\ZeroV99_TaxNumber_Remove_Strong_Tags_Addresses.php:28
filterrender_blockincludes\public\ZeroV99_TaxNumber_Remove_Strong_Tags_Addresses.php:30
filterrender_blockincludes\public\ZeroV99_TaxNumber_Remove_Strong_Tags_Addresses.php:31
actionadmin_noticeszerov99-tax-number.php:25
actionadmin_noticeszerov99-tax-number.php:43
Maintenance & Trust

ZeroV99 Tax Number Maintenance & Trust

Maintenance Signals

WordPress version tested6.9.4
Last updatedDec 3, 2025
PHP min version7.4
Downloads387

Community Trust

Rating0/100
Number of ratings0
Active installs0
Developer Profile

ZeroV99 Tax Number Developer Profile

0v99com

2 plugins · 0 total installs

94
trust score
Avg Security Score
100/100
Avg Patch Time
30 days
View full developer profile
Detection Fingerprints

How We Detect ZeroV99 Tax Number

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

Asset Fingerprints

Asset Paths
/wp-content/plugins/zerov99-tax-number/assets/admin/css/zerov99-tax-number-admin.css/wp-content/plugins/zerov99-tax-number/assets/admin/css/zerov99-tax-number-admin.min.css/wp-content/plugins/zerov99-tax-number/assets/admin/js/zerov99-tax-number-admin.js/wp-content/plugins/zerov99-tax-number/assets/admin/js/zerov99-tax-number-admin.min.js/wp-content/plugins/zerov99-tax-number/assets/public/js/zerov99-tax-number-checkout.js/wp-content/plugins/zerov99-tax-number/assets/public/js/zerov99-tax-number-checkout.min.js
Version Parameters
zerov99-tax-number/assets/admin/css/zerov99-tax-number/assets/admin/js/zerov99-tax-number/assets/public/js/

HTML / DOM Fingerprints

JS Globals
zerov99_taxnumber_taxid_data
FAQ

Frequently Asked Questions about ZeroV99 Tax Number