WP Post Background Security & Risk Analysis

wordpress.org/plugins/wp-post-background

This plugin allows you to add and image as background of posts, pages or custom post type in general (in the same way as a thumbnail).

20 active installs v1.0.0 PHP + WP 3.0+ Updated May 16, 2015
attachmentbackgroundpost
85
A · Safe
CVEs total0
Unpatched0
Last CVENever
Safety Verdict

Is WP Post Background Safe to Use in 2026?

Generally Safe

Score 85/100

WP Post Background 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 wp-post-background plugin v1.0.0 exhibits a concerning security posture due to significant vulnerabilities in its handling of entry points. While it demonstrates good practices with SQL queries using prepared statements and a lack of file operations or external HTTP requests, these strengths are overshadowed by critical weaknesses. The plugin exposes two AJAX handlers without any authentication or capability checks, creating a substantial attack surface that could be exploited by unauthenticated users. Furthermore, the taint analysis reveals two flows with unsanitized paths, indicating potential for data injection or manipulation if user-controlled input reaches these paths without proper sanitization. The absence of any known CVEs is positive but does not negate the inherent risks present in the code itself. The plugin needs immediate attention to address the unprotected entry points and unsanitized data flows to improve its overall security.

Key Concerns

  • AJAX handlers without authentication checks
  • Flows with unsanitized paths
  • Unescaped output
  • Missing capability checks on AJAX
Vulnerabilities
None known

WP Post Background Security Vulnerabilities

No known vulnerabilities — this is a good sign.
Code Analysis
Analyzed Mar 16, 2026

WP Post Background Code Analysis

Dangerous Functions
0
Raw SQL Queries
0
0 prepared
Unescaped Output
11
0 escaped
Nonce Checks
1
Capability Checks
0
File Operations
0
External Requests
0
Bundled Libraries
0

Output Escaping

0% escaped11 total outputs
Data Flows
2 unsanitized

Data Flow Analysis

3 flows2 with unsanitized paths
wppb_add_post_background (wp-post-background.php:139)
Source (user input) Sink (dangerous op) Sanitizer Transform Unsanitized Sanitized
Attack Surface
2 unprotected

WP Post Background Attack Surface

Entry Points2
Unprotected2

AJAX Handlers 2

authwp_ajax_wppb_add_post_backgroundwp-post-background.php:134
authwp_ajax_wppb_remove_post_backgroundwp-post-background.php:164
WordPress Hooks 4
actionplugins_loadedwp-post-background.php:14
actionadmin_initwp-post-background.php:25
actionadmin_headwp-post-background.php:91
filterattachment_fields_to_editwp-post-background.php:102
Maintenance & Trust

WP Post Background Maintenance & Trust

Maintenance Signals

WordPress version tested4.2.39
Last updatedMay 16, 2015
PHP min version
Downloads3K

Community Trust

Rating0/100
Number of ratings0
Active installs20
Developer Profile

WP Post Background Developer Profile

jcchavezs

2 plugins · 220 total installs

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

How We Detect WP Post Background

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

Asset Fingerprints

Asset Paths
/wp-content/plugins/wp-post-background/wp-post-background.js
Script Paths
/wp-content/plugins/wp-post-background/wp-post-background.js
Version Parameters
wp-post-background/wp-post-background.js?ver=

HTML / DOM Fingerprints

CSS Classes
wp-post-background
Data Attributes
id="wp-post-background-id="remove-post-background"id="set-post-background"
JS Globals
WPPBRemoveBackgroundWPPBSetAsBackground
FAQ

Frequently Asked Questions about WP Post Background