FirstImpression.io Security & Risk Analysis

wordpress.org/plugins/appendad

Helping publishers focus on content by freeing them from Ad-Tech and Ad-Operations with one line of code

10 active installs v1.4.6 PHP + WP 2.5+ Updated Jan 24, 2022
adsadsenseadvertisementmonetizationplacements
85
A · Safe
CVEs total0
Unpatched0
Last CVENever
Safety Verdict

Is FirstImpression.io Safe to Use in 2026?

Generally Safe

Score 85/100

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

No known CVEs Updated 4yr ago
Risk Assessment

The "appendad" plugin v1.4.6 presents a mixed security posture. On the positive side, it exhibits no known vulnerabilities (CVEs), uses prepared statements for all its SQL queries, and does not engage in file operations or external HTTP requests. The absence of bundled libraries and critical taint flows is also encouraging. However, significant concerns arise from the static analysis. The plugin exposes one AJAX handler without any authentication checks, creating a direct entry point for potential exploitation. Furthermore, a substantial portion of its output is not properly escaped, leaving it vulnerable to cross-site scripting (XSS) attacks. The presence of a capability check suggests some attempt at access control, but its effectiveness is undermined by the unprotected AJAX endpoint.

Key Concerns

  • Unprotected AJAX handler
  • Unescaped output
Vulnerabilities
None known

FirstImpression.io Security Vulnerabilities

No known vulnerabilities — this is a good sign.
Version History

FirstImpression.io Release Timeline

No version history available.
Code Analysis
Analyzed Mar 17, 2026

FirstImpression.io Code Analysis

Dangerous Functions
0
Raw SQL Queries
0
0 prepared
Unescaped Output
6
0 escaped
Nonce Checks
0
Capability Checks
1
File Operations
0
External Requests
0
Bundled Libraries
0

Output Escaping

0% escaped6 total outputs
Attack Surface
1 unprotected

FirstImpression.io Attack Surface

Entry Points1
Unprotected1

AJAX Handlers 1

authwp_ajax_my_actionappendad.php:258
WordPress Hooks 3
actionadmin_menuappendad.php:40
actionwp_headappendad.php:51
actionwp_footerappendad.php:52
Maintenance & Trust

FirstImpression.io Maintenance & Trust

Maintenance Signals

WordPress version tested5.9.13
Last updatedJan 24, 2022
PHP min version
Downloads3K

Community Trust

Rating100/100
Number of ratings1
Active installs10
Developer Profile

FirstImpression.io Developer Profile

FirstImpression.io

1 plugin · 10 total installs

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

How We Detect FirstImpression.io

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

Asset Fingerprints

Asset Paths
/wp-content/plugins/appendad/fab.js/wp-content/plugins/appendad/fi_client.js/wp-content/plugins/appendad/fi.js
Script Paths
//ecdn.analysis.fi/static/js/fab.js//ecdn.firstimpression.io/fi_client.js//cdn.firstimpression.io/fi.js

HTML / DOM Fingerprints

CSS Classes
asd_errorasd_savedvasu_btn
HTML Comments
BEGIN FIRSTIMPRESSION.IO TAGEND FIRSTIMPRESSION.IO TAGFirstImpression.io Targeting - StartFirstImpression.io Targeting - End
Data Attributes
data-plugin-versiondata-wp-versionid="apdPageData"id="fi-data-cfasync="false"
JS Globals
window.apdAdminwindow.apd_options
FAQ

Frequently Asked Questions about FirstImpression.io