BookLinker Security & Risk Analysis

wordpress.org/plugins/booklinker

Give your visitors the freedom of choice with BookLinker, a WordPress plug-in that converts existing affiliate links (Amazon, IndieBound, Powell' …

10 active installs v1.0 PHP + WP 2.7+ Updated May 29, 2009
affiliateamazonbooksindieboundpowells
85
A · Safe
CVEs total0
Unpatched0
Last CVENever
Safety Verdict

Is BookLinker Safe to Use in 2026?

Generally Safe

Score 85/100

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

No known CVEs Updated 17yr ago
Risk Assessment

The plugin "booklinker" v1.0 exhibits a strong adherence to secure coding practices in several key areas. The complete absence of known CVEs and a history free of vulnerabilities is a significant positive indicator, suggesting a mature and well-maintained codebase. Furthermore, the analysis shows no dangerous functions, file operations, or external HTTP requests, which are common vectors for exploitation. The use of prepared statements for all SQL queries is excellent and mitigates SQL injection risks effectively.

However, a critical concern arises from the output escaping analysis, where 0% of the 54 outputs are properly escaped. This presents a substantial cross-site scripting (XSS) risk, as user-supplied data or data from external sources that are not properly sanitized before being displayed could be leveraged to inject malicious scripts into the user's browser.

While the plugin's attack surface is currently zero and taint analysis found no critical or high-severity unsanitized flows, the lack of output escaping is a severe weakness. The absence of known vulnerabilities might be due to the limited attack surface or simply a lack of past security scrutiny. The plugin needs immediate attention regarding output sanitization to prevent potential XSS vulnerabilities.

Key Concerns

  • Unescaped output detected
Vulnerabilities
None known

BookLinker Security Vulnerabilities

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

BookLinker Release Timeline

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

BookLinker Code Analysis

Dangerous Functions
0
Raw SQL Queries
0
0 prepared
Unescaped Output
54
0 escaped
Nonce Checks
0
Capability Checks
0
File Operations
0
External Requests
0
Bundled Libraries
0

Output Escaping

0% escaped54 total outputs
Data Flows · Security
2 unsanitized

Data Flow Analysis

2 flows2 with unsanitized paths
update_booklinker_plugin_options (booklinker.php:89)
Source (user input) Sink (dangerous op) Sanitizer Transform Unsanitized Sanitized
Attack Surface

BookLinker Attack Surface

Entry Points0
Unprotected0
WordPress Hooks 3
actionadmin_menubooklinker.php:30
actionget_headerbooklinker.php:31
actionwp_footerbooklinker.php:32
Maintenance & Trust

BookLinker Maintenance & Trust

Maintenance Signals

WordPress version tested2.7.1
Last updatedMay 29, 2009
PHP min version
Downloads3K

Community Trust

Rating0/100
Number of ratings0
Active installs10
Developer Profile

BookLinker Developer Profile

mhartford

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 BookLinker

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

Asset Fingerprints

HTML / DOM Fingerprints

JS Globals
window.booklinker_options
FAQ

Frequently Asked Questions about BookLinker