Daily Free Kindle Books Security & Risk Analysis

wordpress.org/plugins/daily-free-kindle-books

This plugin creates a sidebar widget that displays images of and links to free Kindle books for the day (updated daily). You can add your Amazon affil …

10 active installs v1.0.1 PHP + WP 3.0.1+ Updated Feb 8, 2016
free-bookskindlewidget
85
A · Safe
CVEs total0
Unpatched0
Last CVENever
Safety Verdict

Is Daily Free Kindle Books Safe to Use in 2026?

Generally Safe

Score 85/100

Daily Free Kindle Books 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 'daily-free-kindle-books' v1.0.1 plugin exhibits a mixed security posture. On one hand, the absence of any known CVEs and a complete lack of documented vulnerabilities in its history are positive indicators. Furthermore, the plugin demonstrates good practices in its SQL query handling, with 100% of queries utilizing prepared statements, and it has a minimal attack surface with no reported AJAX handlers, REST API routes, shortcodes, or cron events. However, significant concerns arise from the static code analysis. The presence of the `create_function` function is a clear security risk, as it can be exploited for code injection. More critically, none of the 24 output operations are properly escaped, exposing the plugin to potential cross-site scripting (XSS) vulnerabilities. The lack of nonce checks and capability checks on potential entry points (even though the attack surface is reported as zero) is also a concern if any latent entry points exist that were not detected. The absence of taint analysis results might mean the tool didn't find any flows, or it's an incomplete analysis, but the unescaped output is a direct and actionable risk.

Key Concerns

  • Dangerous function create_function used
  • 100% of outputs unescaped
  • No nonce checks
  • No capability checks
Vulnerabilities
None known

Daily Free Kindle Books Security Vulnerabilities

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

Daily Free Kindle Books Code Analysis

Dangerous Functions
1
Raw SQL Queries
0
0 prepared
Unescaped Output
24
0 escaped
Nonce Checks
0
Capability Checks
0
File Operations
0
External Requests
1
Bundled Libraries
0

Dangerous Functions Found

create_functionadd_action( 'widgets_init', create_function('', 'return register_widget("DailyFreeKindleBooksWidget"daily-free-kindle-books.php:123

Output Escaping

0% escaped24 total outputs
Attack Surface

Daily Free Kindle Books Attack Surface

Entry Points0
Unprotected0
WordPress Hooks 1
actionwidgets_initdaily-free-kindle-books.php:123
Maintenance & Trust

Daily Free Kindle Books Maintenance & Trust

Maintenance Signals

WordPress version tested
Last updatedFeb 8, 2016
PHP min version
Downloads2K

Community Trust

Rating80/100
Number of ratings3
Active installs10
Developer Profile

Daily Free Kindle Books Developer Profile

Jeremy

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 Daily Free Kindle Books

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

Asset Fingerprints

HTML / DOM Fingerprints

CSS Classes
DailyFreeKindleBooksWidget
Data Attributes
id="DailyFreeKindleBooksWidget"name="DailyFreeKindleBooksWidget"id="daily_free_kindle_books"name="daily_free_kindle_books"
Shortcode Output
<p class="submit" style="font-size: .7em; text-align: center;">Submit a Book at <a href="http://freebooksplugin.com">FreeBooksPlugin.com</a></p>
FAQ

Frequently Asked Questions about Daily Free Kindle Books