Invitation Code Checker Security & Risk Analysis

wordpress.org/plugins/invitation-code-checker

With this plugin registrations are only allowed if the user has an invitation code. This plugin is only for WordPress MU and is BuddyPress compatible.

10 active installs v1.0.1 PHP + WP + Updated Oct 22, 2009
buddypresscodeinvitationsignupwpmu
85
A · Safe
CVEs total0
Unpatched0
Last CVENever
Safety Verdict

Is Invitation Code Checker Safe to Use in 2026?

Generally Safe

Score 85/100

Invitation Code Checker has no known CVEs and is actively maintained. It's a solid choice for most WordPress installations.

No known CVEs Updated 16yr ago
Risk Assessment

The "invitation-code-checker" plugin version 1.0.1 presents a concerning security posture despite a lack of recorded vulnerabilities. The static analysis reveals zero entry points (AJAX, REST API, shortcodes, cron events) which is a positive indicator of a limited attack surface. Furthermore, all SQL queries are correctly using prepared statements, and there are no file operations or external HTTP requests detected, further reducing potential risks. However, a significant weakness lies in the complete absence of output escaping across all identified outputs. This means that any data processed by the plugin and then displayed to users or in the admin area is vulnerable to cross-site scripting (XSS) attacks if that data originates from an untrusted source. The taint analysis highlights three flows with unsanitized paths, which, while not classified as critical or high severity, directly correlate with the unescaped output issue and represent a clear risk.

Key Concerns

  • No output escaping detected
  • Taint flows with unsanitized paths
  • No nonce checks
  • No capability checks
Vulnerabilities
None known

Invitation Code Checker Security Vulnerabilities

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

Invitation Code Checker Code Analysis

Dangerous Functions
0
Raw SQL Queries
0
0 prepared
Unescaped Output
5
0 escaped
Nonce Checks
0
Capability Checks
0
File Operations
0
External Requests
0
Bundled Libraries
0

Output Escaping

0% escaped5 total outputs
Data Flows
3 unsanitized

Data Flow Analysis

3 flows3 with unsanitized paths
add_code_field_to_signup (invitation-code-checker.php:41)
Source (user input) Sink (dangerous op) Sanitizer Transform Unsanitized Sanitized
Attack Surface

Invitation Code Checker Attack Surface

Entry Points0
Unprotected0
WordPress Hooks 6
actionsignup_extra_fieldsinvitation-code-checker.php:32
actionbp_after_signup_profile_fieldsinvitation-code-checker.php:33
filterwpmu_validate_user_signupinvitation-code-checker.php:34
filterbp_signup_validateinvitation-code-checker.php:35
actionupdate_wpmu_optionsinvitation-code-checker.php:36
actionwpmu_optionsinvitation-code-checker.php:37
Maintenance & Trust

Invitation Code Checker Maintenance & Trust

Maintenance Signals

WordPress version tested
Last updatedOct 22, 2009
PHP min version
Downloads4K

Community Trust

Rating0/100
Number of ratings0
Active installs10
Developer Profile

Invitation Code Checker Developer Profile

Dennis

2 plugins · 30 total installs

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

How We Detect Invitation Code Checker

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

Asset Fingerprints

Asset Paths
/wp-content/plugins/invitation-code-checker/invitation-code-checker.php

HTML / DOM Fingerprints

CSS Classes
invitation-code-sectionerror
Data Attributes
id="invitation-code-section"style="font-size:24px; margin:5px 0px; width:100%;"style="width:50%;"style="width: 95%"
FAQ

Frequently Asked Questions about Invitation Code Checker