Shellshock Check Security & Risk Analysis

wordpress.org/plugins/shellshock-check

Test if the server is affected by the Shellshock vulnerability.

30 active installs v1.1.0 PHP + WP 3.0+ Updated Sep 7, 2015
securityshell-shockshellshock
85
A · Safe
CVEs total0
Unpatched0
Last CVENever
Download
Safety Verdict

Is Shellshock Check Safe to Use in 2026?

Generally Safe

Score 85/100

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

No known CVEs Updated 10yr ago
Risk Assessment

The "shellshock-check" plugin, version 1.1.0, exhibits a generally good security posture due to its extremely limited attack surface and the absence of known vulnerabilities. The static analysis reveals no AJAX handlers, REST API routes, shortcodes, or cron events, meaning there are no readily exposed entry points for attackers. Furthermore, the plugin has a clean vulnerability history with zero recorded CVEs, indicating a history of secure development or infrequent security scrutiny.

Key Concerns

  • Dangerous function proc_open detected
  • Output escaping is not properly implemented
  • Missing nonce checks
  • Missing capability checks
Vulnerabilities
None known

Shellshock Check Security Vulnerabilities

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

Shellshock Check Code Analysis

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

Dangerous Functions Found

proc_open$p = proc_open('bash -c "echo Test"', $desc, $pipes, null, $env);shellshock-check.php:30
proc_open$p = proc_open("rm -f echo; env 'x=() { (a)=>\' bash -c \"echo date +%Y\"; cat echo", $desc, $pipes,shellshock-check.php:53

Output Escaping

0% escaped1 total outputs
Attack Surface

Shellshock Check Attack Surface

Entry Points0
Unprotected0
WordPress Hooks 2
actionadmin_menushellshock-check.php:156
actionadmin_initshellshock-check.php:157
Maintenance & Trust

Shellshock Check Maintenance & Trust

Maintenance Signals

WordPress version tested4.3.34
Last updatedSep 7, 2015
PHP min version
Downloads4K

Community Trust

Rating100/100
Number of ratings4
Active installs30
Developer Profile

Shellshock Check Developer Profile

Vladimir Prelovac

20 plugins · 1.0M total installs

70
trust score
Avg Security Score
87/100
Avg Patch Time
2577 days
View full developer profile
Detection Fingerprints

How We Detect Shellshock Check

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

Asset Fingerprints

HTML / DOM Fingerprints

CSS Classes
wrap
HTML Comments
Dummy option, to hook to the WordPress API and enforce security when submitting the form.
FAQ

Frequently Asked Questions about Shellshock Check