Slenderbox Security & Risk Analysis

wordpress.org/plugins/slenderbox

Overlays images on the current page using Slenderbox, a lightweight and framework-free lightbox plugin that can be used with valid HTML5.

40 active installs v1.1.2 PHP + WP 2.6+ Updated Dec 9, 2018
imagelightboxphotopictureslenderbox
85
A · Safe
CVEs total0
Unpatched0
Last CVENever
Safety Verdict

Is Slenderbox Safe to Use in 2026?

Generally Safe

Score 85/100

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

No known CVEs Updated 7yr ago
Risk Assessment

The Slenderbox plugin, version 1.1.2, exhibits a generally strong security posture based on the provided static analysis. Notably, there are no detected AJAX handlers, REST API routes, shortcodes, or cron events, which significantly reduces the plugin's attack surface. Furthermore, the code signals indicate a complete absence of dangerous functions, file operations, external HTTP requests, and the use of prepared statements for all SQL queries. This adherence to secure coding practices in these critical areas is commendable.

However, a significant concern arises from the output escaping analysis, which shows that 100% of total outputs are not properly escaped. This presents a potential risk for cross-site scripting (XSS) vulnerabilities if user-supplied data is displayed directly without sanitization. The taint analysis, while not revealing critical or high severity issues, did identify two flows with unsanitized paths. Although these did not manifest as critical vulnerabilities in this specific analysis, they indicate potential areas where untrusted input might not be handled with sufficient caution.

The plugin's vulnerability history is clean, with no known CVEs, which is a positive indicator of its past security. However, the absence of vulnerabilities does not guarantee future security, especially given the identified output escaping issues. In conclusion, Slenderbox demonstrates good practices in minimizing its attack surface and secure database interaction, but the lack of output escaping is a notable weakness that requires immediate attention to prevent potential XSS attacks.

Key Concerns

  • Unescaped output identified
  • Taint flows with unsanitized paths
Vulnerabilities
None known

Slenderbox Security Vulnerabilities

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

Slenderbox Release Timeline

v1.1.2Current
v1.1.1
v1.1.0
v1.0.0
Code Analysis
Analyzed Mar 16, 2026

Slenderbox Code Analysis

Dangerous Functions
0
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

Output Escaping

0% escaped1 total outputs
Data Flows · Security
2 unsanitized

Data Flow Analysis

2 flows2 with unsanitized paths
slenderbox_options_page (slenderbox.php:44)
Source (user input) Sink (dangerous op) Sanitizer Transform Unsanitized Sanitized
Attack Surface

Slenderbox Attack Surface

Entry Points0
Unprotected0
WordPress Hooks 6
actionadmin_menuslenderbox.php:41
actionwp_enqueue_scriptsslenderbox.php:69
filterthe_contentslenderbox.php:90
filterthe_excerptslenderbox.php:91
filterwidget_textslenderbox.php:92
actionwp_enqueue_scriptsslenderbox.php:100
Maintenance & Trust

Slenderbox Maintenance & Trust

Maintenance Signals

WordPress version tested5.0.25
Last updatedDec 9, 2018
PHP min version
Downloads3K

Community Trust

Rating92/100
Number of ratings10
Active installs40
Developer Profile

Slenderbox Developer Profile

Matthew Petroff

2 plugins · 1K total installs

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

How We Detect Slenderbox

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

Asset Fingerprints

Asset Paths
/wp-content/plugins/slenderbox/slenderbox.css/wp-content/plugins/slenderbox/slenderbox.js
Script Paths
/wp-content/plugins/slenderbox/slenderbox.js

HTML / DOM Fingerprints

Data Attributes
data-sbox
FAQ

Frequently Asked Questions about Slenderbox