F4 Post Tree Security & Risk Analysis

wordpress.org/plugins/f4-tree

This plugin adds a neat and easy to use sidebar tree view to your posts and pages backend.

500 active installs v2.0.4 PHP 8.0+ WP 6.5.0+ Updated Dec 16, 2025
drag-and-drophierarchysidebartreetreeview
99
A · Safe
CVEs total1
Unpatched0
Last CVEJan 7, 2025
Safety Verdict

Is F4 Post Tree Safe to Use in 2026?

Generally Safe

Score 99/100

F4 Post Tree has a strong security track record. Known vulnerabilities have been patched promptly.

1 known CVELast CVE: Jan 7, 2025Updated 3mo ago
Risk Assessment

The plugin "f4-tree" v2.0.4 demonstrates a generally good security posture with a small attack surface and a high percentage of properly escaped outputs. The static analysis reveals no immediate critical vulnerabilities in the code itself, such as dangerous functions or unsanitized taint flows. The plugin also uses prepared statements for all its SQL queries, which is a strong security practice.

However, there are areas for concern. The absence of nonce checks on any entry points, although the entry point count is zero, indicates a potential gap if new entry points are introduced without proper security measures. The presence of a past medium-severity Cross-Site Scripting (XSS) vulnerability, even though currently patched, highlights a historical weakness in input sanitization. Furthermore, the bundled Freemius library at version 1.0 is likely outdated and could contain known vulnerabilities that are not directly exposed by this plugin's code but could be exploited through the library itself.

In conclusion, while the current version of "f4-tree" appears to be relatively secure based on the static analysis, the historical XSS vulnerability and the outdated bundled library warrant careful consideration. Addressing these potential weaknesses by ensuring thorough sanitization for any future entry points and updating bundled libraries proactively would further strengthen the plugin's security.

Key Concerns

  • Bundled outdated Freemius library v1.0
  • Past medium XSS vulnerability
  • No nonce checks on entry points
Vulnerabilities
1

F4 Post Tree Security Vulnerabilities

CVEs by Year

1 CVE in 2025
2025
Patched Has unpatched

Severity Breakdown

Medium
1

1 total CVE

CVE-2025-22499medium · 6.1Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

F4 Post Tree <= 1.1.18 - Reflected Cross-Site Scripting

Jan 7, 2025 Patched in 1.1.19 (8d)
Code Analysis
Analyzed Mar 16, 2026

F4 Post Tree Code Analysis

Dangerous Functions
0
Raw SQL Queries
0
2 prepared
Unescaped Output
1
25 escaped
Nonce Checks
0
Capability Checks
2
File Operations
3
External Requests
0
Bundled Libraries
1

Bundled Libraries

Freemius1.0

SQL Query Safety

100% prepared2 total queries

Output Escaping

96% escaped26 total outputs
Data Flows
1 unsanitized

Data Flow Analysis

1 flows1 with unsanitized paths
<Hooks> (modules\Tree\Hooks.php:0)
Source (user input) Sink (dangerous op) Sanitizer Transform Unsanitized Sanitized
Attack Surface

F4 Post Tree Attack Surface

Entry Points0
Unprotected0
WordPress Hooks 1
filterplugin_iconf4-tree.php:64
Maintenance & Trust

F4 Post Tree Maintenance & Trust

Maintenance Signals

WordPress version tested6.9.4
Last updatedDec 16, 2025
PHP min version8.0
Downloads12K

Community Trust

Rating100/100
Number of ratings4
Active installs500
Developer Profile

F4 Post Tree Developer Profile

FAKTOR VIER

7 plugins · 4K total installs

94
trust score
Avg Security Score
100/100
Avg Patch Time
8 days
View full developer profile
Detection Fingerprints

How We Detect F4 Post Tree

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

Asset Fingerprints

Asset Paths
/wp-content/plugins/f4-tree/assets/css/tree.css/wp-content/plugins/f4-tree/assets/js/tree.js
Script Paths
https://cdn.jsdelivr.net/npm/wunderbaum@0.13/dist/wunderbaum.min.css/wp-content/plugins/f4-tree/assets/js/tree.js
Version Parameters
f4-tree/assets/css/tree.css?ver=f4-tree/assets/js/tree.js?ver=

HTML / DOM Fingerprints

CSS Classes
f4-tree-containerf4-tree-wrapperf4-tree-mainf4-tree-headerf4-tree-contentf4-tree-footerf4-tree-toolsf4-tree-title
Data Attributes
data-f4-tree-iddata-f4-tree-post-typedata-f4-tree-post-id
JS Globals
f4_tree_vars
REST Endpoints
/wp-json/f4-tree/v1/refresh/wp-json/f4-tree/v1/move-post
FAQ

Frequently Asked Questions about F4 Post Tree