CVE-2025-22798: Responsive jQuery Slider XSS Vulnerability

CVE-2025-22798 Overview

CVE-2025-22798 is a stored Cross-Site Scripting (XSS) vulnerability in the CHR Designer Responsive jQuery Slider WordPress plugin (responsive-jquery-slider). The flaw affects all plugin versions up to and including 1.1.1 and results from improper neutralization of user-supplied input during web page generation [CWE-79]. Authenticated attackers with low privileges can inject persistent JavaScript payloads that execute in the browsers of site visitors and administrators.

Critical Impact
Attackers can inject persistent JavaScript that executes across WordPress sessions, enabling session hijacking, administrative account takeover, and defacement through stored payloads served to every visitor of the affected page.

Affected Products

CHR Designer Responsive jQuery Slider plugin for WordPress
All versions from initial release through 1.1.1
WordPress sites with the responsive-jquery-slider plugin installed and activated

Discovery Timeline

2025-01-15 - CVE-2025-22798 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-22798

Vulnerability Analysis

The vulnerability is a stored XSS flaw in the Responsive jQuery Slider plugin. The plugin fails to properly sanitize and escape user-controlled input before persisting it and rendering it back in generated HTML. Because the payload is stored server-side, it executes for every user who loads the affected page.

Exploitation requires an authenticated user with low privileges and depends on user interaction with the rendered page. The scope is changed, meaning the injected script can affect resources beyond the vulnerable component, including the WordPress administrative interface.

Root Cause

The root cause is missing input validation and output encoding in slider configuration or content fields exposed by the plugin. Data submitted through plugin-managed inputs is written to the database without HTML entity encoding. When the slider markup is rendered, the raw input is emitted into the Document Object Model (DOM), enabling arbitrary script execution.

Attack Vector

An attacker authenticated as a contributor-level or higher user submits crafted slider content containing HTML or JavaScript payloads. When an administrator or visitor loads a page containing the malicious slider, the browser parses and executes the injected script. Consult the Patchstack Vulnerability Report for technical details on the vulnerable parameters.

No verified proof-of-concept code is publicly available. The vulnerability mechanism follows standard stored XSS patterns where unsanitized input in plugin fields is later reflected in rendered HTML output without escaping.

Detection Methods for CVE-2025-22798

Indicators of Compromise

Slider configuration entries in the WordPress database containing <script>, onerror=, onload=, or javascript: strings
Unexpected outbound requests from browsers rendering pages that embed the slider shortcode
New or modified administrator accounts created shortly after a low-privileged user edited slider content
Unusual JavaScript files loaded from third-party domains within pages using the plugin

Detection Strategies

Query the wp_posts and wp_postmeta tables for slider entries containing HTML event handlers or <script> tags
Review web server access logs for suspicious POST requests to plugin administrative endpoints from low-privileged accounts
Inspect rendered slider pages with a headless browser to identify script execution outside the expected content set
Correlate authenticated content submissions with subsequent privileged session activity

Monitoring Recommendations

Enable WordPress audit logging to record content changes made by contributor and author roles
Alert on modifications to plugin-managed database tables from non-administrator accounts
Monitor browser Content Security Policy (CSP) violation reports for script-src blocks originating on slider pages
Track creation of administrative users and role changes following slider edits

How to Mitigate CVE-2025-22798

Immediate Actions Required

Deactivate and remove the responsive-jquery-slider plugin until a patched version is confirmed
Audit all slider content and metadata for injected scripts and remove malicious entries
Rotate credentials for administrator accounts that may have loaded compromised slider pages
Restrict contributor and author role permissions to limit who can create or edit slider content

Patch Information

At the time of the NVD entry, no vendor-supplied fixed version is listed for the Responsive jQuery Slider plugin. All versions through 1.1.1 are affected. Site operators should monitor the Patchstack Vulnerability Report for updates and replace the plugin with a maintained alternative if a patch is not released.

Workarounds

Remove the plugin entirely and use a maintained slider plugin with active security support
Deploy a Web Application Firewall (WAF) with rules that block XSS payloads in WordPress plugin endpoints
Enforce a strict Content Security Policy that disallows inline scripts and restricts script sources to trusted origins
Limit slider editing capabilities to administrator accounts through role-management plugins

bash

# Disable the vulnerable plugin via WP-CLI
wp plugin deactivate responsive-jquery-slider
wp plugin delete responsive-jquery-slider

# Audit database for injected script content in slider entries
wp db query "SELECT ID, post_title FROM wp_posts WHERE post_content LIKE '%<script%' OR post_content LIKE '%onerror=%';"