
Is Varnish Working? Security & Risk Analysis
wordpress.org/plugins/is-varnish-workingTest your wordpress url to see if it contains the Varnish Cache HTTP headers
Is Is Varnish Working? Safe to Use in 2026?
Generally Safe
Score 85/100Is Varnish Working? has no known CVEs and is actively maintained. It's a solid choice for most WordPress installations.
The "is-varnish-working" plugin version 1.0.2 exhibits a generally good security posture based on the static analysis. There are no detected AJAX handlers, REST API routes, shortcodes, or cron events, resulting in a zero-point attack surface, which is excellent. Furthermore, the absence of dangerous functions, external HTTP requests, and file operations, coupled with 100% of SQL queries using prepared statements, indicates robust development practices in these critical areas. The plugin also has no recorded vulnerability history, which suggests a history of secure development or a lack of discovered issues.
However, the static analysis does reveal a significant concern regarding output escaping. With only 33% of outputs properly escaped out of six total, there is a notable risk of cross-site scripting (XSS) vulnerabilities. This lack of proper sanitization on a portion of its output points can expose users to malicious code injection if user-supplied data is not handled carefully before being displayed. While the overall attack surface is minimal and there are no known historical vulnerabilities, the unescaped output represents a tangible and specific risk that needs to be addressed.
Key Concerns
- Low percentage of properly escaped output
Is Varnish Working? Security Vulnerabilities
Is Varnish Working? Release Timeline
Is Varnish Working? Code Analysis
Output Escaping
Is Varnish Working? Attack Surface
WordPress Hooks 3
Maintenance & Trust
Is Varnish Working? Maintenance & Trust
Maintenance Signals
Community Trust
Is Varnish Working? Alternatives
CLP Varnish Cache
clp-varnish-cache
CLP Varnish Cache lets you configure the cache lifetime, paths, and parameters to exclude from caching. You can purge single urls or cache entries by …
Varnish WordPress
varnish-wp
This plugin enables you to use the Varnish cache with WordPress, designed for high performance websites.
Smart Varnish
smart-varnish
Varnish cache bypass plugin.
Proxy Cache Purge
varnish-http-purge
Automatically empty proxy cached content when your site is modified.
Purge Varnish Cache
purge-varnish
Clean clear VARNISH cache automatically when content on your site is created or modified, also allow you to purge VARNISH cache manually.
Is Varnish Working? Developer Profile
1 plugin · 10 total installs
How We Detect Is Varnish Working?
Patterns used to identify this plugin on WordPress sites during automated security audits and web crawling.
Asset Fingerprints
HTML / DOM Fingerprints
wrapperboxheadersListalertalert-dangerid="api_error"id="api_test_form"id="api_test"id="api_response_varnish"id="api_response_cache"id="api_response_other"+2 morejQuery