CVE-2026-24558 in ABG Rich Pins Plugin
Summary
by MITRE • 01/23/2026
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in antoniobg ABG Rich Pins abg-rich-pins allows Stored XSS.This issue affects ABG Rich Pins: from n/a through <= 1.1.
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Analysis
by VulDB Data Team • 01/23/2026
The CVE-2026-24558 vulnerability represents a critical cross-site scripting flaw in the antoniobg ABG Rich Pins WordPress plugin, specifically impacting versions from the initial release through version 1.1. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is one of the most prevalent and dangerous web application security flaws. The issue manifests as a stored XSS vulnerability, meaning that malicious script code can be permanently stored on the server and subsequently executed every time a user accesses the affected web page. The vulnerability occurs during the web page generation process when input data is not properly sanitized or neutralized before being rendered in the browser context.
The technical flaw stems from inadequate input validation and output encoding within the plugin's handling of user-supplied data. When administrators or users input content through the plugin's interface, the system fails to properly escape or sanitize special characters that could be interpreted as HTML or JavaScript code. This allows attackers to inject malicious payloads that persist in the database and execute whenever the affected page is loaded. The stored nature of this vulnerability means that the malicious code does not require user interaction beyond visiting the compromised page, making it particularly dangerous for administrators and regular users who may encounter the malicious content in plugin settings or generated content areas. The vulnerability impacts the core functionality of the ABG Rich Pins plugin, which is designed to generate rich content for social media platforms like Pinterest, making it a prime target for attackers seeking to compromise user sessions or redirect traffic.
The operational impact of this vulnerability extends beyond simple data theft or defacement. Attackers can leverage this stored XSS to hijack user sessions, steal cookies, perform actions on behalf of authenticated users, or redirect victims to malicious websites. In a WordPress environment, this vulnerability could enable attackers to gain unauthorized access to administrator accounts, modify plugin configurations, or even install additional malware. The risk is amplified because the plugin is designed to generate content for social media platforms, making it likely to be used by users who may not be security-savvy and could inadvertently expose themselves to attacks. The vulnerability affects not just individual users but potentially entire WordPress installations that rely on this plugin for content generation and social media integration. Additionally, the stored nature means that the attack can persist even after the initial injection, making detection and remediation more challenging for system administrators.
Mitigation strategies for CVE-2026-24558 should begin with immediate plugin version updates to the latest secure release, as vendors typically address such vulnerabilities through patch releases. System administrators should implement input validation and output encoding measures at multiple layers, including server-side sanitization of all user inputs and proper HTML escaping of dynamic content. The principle of least privilege should be enforced by ensuring that plugin functionality requires appropriate authentication and authorization checks. Network-level protections such as content security policies can provide additional defense-in-depth measures by restricting script execution and preventing unauthorized code injection. Regular security audits of WordPress plugins should be conducted to identify and remediate similar vulnerabilities, with particular attention to plugins that handle user input and generate dynamic web content. Organizations should also consider implementing web application firewalls to detect and block suspicious input patterns that may indicate XSS attempts. The ATT&CK framework categorizes this vulnerability under T1059.005 Command and Scripting Interpreter: Visual Basic, which highlights the potential for attackers to leverage such vulnerabilities to execute malicious commands within the victim environment, making proper patch management and input sanitization critical defensive measures.