CVE-2025-22570: Inline Tweets Plugin Stored XSS Vulnerability

CVE-2025-22570 Overview

CVE-2025-22570 is a Stored Cross-Site Scripting (XSS) vulnerability affecting the Inline Tweets WordPress plugin developed by mdjekic. The vulnerability stems from improper neutralization of input during web page generation, allowing attackers to inject malicious scripts that persist in the application and execute when other users view affected pages.

Critical Impact

This Stored XSS vulnerability allows attackers to inject persistent malicious scripts that execute in the context of victim browsers, potentially leading to session hijacking, credential theft, and unauthorized actions on behalf of authenticated users.

Affected Products

• Inline Tweets WordPress Plugin version 2.0 and earlier
• All WordPress installations using the vulnerable Inline Tweets plugin

Discovery Timeline

• 2025-01-13 - CVE-2025-22570 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-22570

Vulnerability Analysis

This vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation). The Inline Tweets plugin fails to properly sanitize user-supplied input before storing it in the database and subsequently rendering it on web pages. Unlike reflected XSS attacks that require victims to click malicious links, stored XSS payloads persist within the application, making them particularly dangerous as they can affect multiple users without any direct interaction with the attacker.

The stored nature of this vulnerability means that once a malicious payload is injected, it will execute every time the affected content is loaded, potentially compromising all users who view the affected pages including administrators.

Root Cause

The root cause of CVE-2025-22570 lies in insufficient input validation and output encoding within the Inline Tweets plugin. The plugin processes user input related to tweet embedding functionality without adequately sanitizing special characters such as <, >, ", and '. This allows attackers to inject arbitrary HTML and JavaScript code that gets stored in the WordPress database and executed when the content is rendered in users' browsers.

Attack Vector

An attacker can exploit this vulnerability by submitting specially crafted input containing malicious JavaScript through the plugin's tweet functionality. The malicious payload is stored in the WordPress database and executed whenever the affected content is displayed to users. This could enable attackers to:

• Steal session cookies and authentication tokens
• Perform actions on behalf of authenticated users
• Redirect users to malicious websites
• Deface website content
• Capture sensitive information entered by users

The attack does not require authentication in many cases, depending on the plugin's configuration and the WordPress site's access controls. For detailed technical information, refer to the Patchstack security advisory.

Detection Methods for CVE-2025-22570

Indicators of Compromise

• Unexpected JavaScript code or <script> tags appearing in stored content or database entries related to Inline Tweets
• Suspicious HTTP requests containing encoded script payloads targeting the Inline Tweets plugin endpoints
• User reports of unexpected browser behavior, redirects, or pop-ups when viewing pages with embedded tweets
• Anomalous outbound connections from user browsers to unknown external domains

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common XSS payload patterns in requests to WordPress
• Monitor database queries and stored content for suspicious HTML/JavaScript injection attempts
• Enable Content Security Policy (CSP) headers and monitor for policy violations that may indicate XSS attempts
• Conduct regular security audits of stored content in the WordPress database for malicious scripts

Monitoring Recommendations

• Enable verbose logging for the WordPress installation and review logs for suspicious plugin-related activity
• Deploy client-side monitoring solutions to detect unexpected script execution in user browsers
• Set up alerts for modifications to posts or pages containing Inline Tweets shortcodes
• Monitor for unusual patterns in user session activity that may indicate session hijacking

How to Mitigate CVE-2025-22570

Immediate Actions Required

• Deactivate and remove the Inline Tweets plugin (inline-tweets) immediately if no patched version is available
• Review all existing content created with the Inline Tweets plugin for malicious script injections
• Implement Content Security Policy (CSP) headers to mitigate the impact of any successful XSS attacks
• Consider using alternative, actively maintained tweet embedding solutions

Patch Information

As of the vulnerability disclosure, all versions of the Inline Tweets plugin through version 2.0 are affected. Site administrators should check the Patchstack advisory for updates on patch availability. Until a patched version is released, removing the plugin is the recommended mitigation approach.

Workarounds

• Disable the Inline Tweets plugin until a security patch is available
• Implement server-side input validation and output encoding for any content processed by the plugin
• Deploy a Web Application Firewall with XSS protection rules enabled
• Restrict plugin access to trusted administrators only and limit who can create content using the plugin's features

# WordPress CLI commands to check and deactivate the vulnerable plugin
# Check if the vulnerable plugin is installed
wp plugin list --name=inline-tweets --status=active

# Deactivate the vulnerable plugin
wp plugin deactivate inline-tweets

# Optionally remove the plugin entirely
wp plugin delete inline-tweets