CVE-2025-28968 in WP Wall Plugin
Summary
by MITRE • 07/04/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Vladimir Prelovac WP Wall allows Reflected XSS. This issue affects WP Wall: from n/a through 1.7.3.
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Analysis
by VulDB Data Team • 07/04/2025
This vulnerability represents a classic cross-site scripting flaw that enables attackers to inject malicious scripts into web pages viewed by other users. The weakness exists within the WP Wall plugin for WordPress, specifically in how it processes and renders user input during web page generation. The reflected nature of this vulnerability means that malicious input is immediately reflected back to users without proper sanitization or encoding, creating an environment where attacker-controlled code can execute in the context of the victim's browser.
The technical implementation of this flaw stems from insufficient input validation and output encoding within the plugin's rendering pipeline. When users submit data through various interface elements or parameters that are subsequently displayed on web pages, the plugin fails to properly escape or sanitize these inputs before presentation. This allows an attacker to craft malicious payloads that, when executed, can perform actions such as stealing session cookies, redirecting users to malicious sites, or executing arbitrary JavaScript code within the victim's browser context. The vulnerability affects all versions of WP Wall up to and including version 1.7.3, indicating a persistent flaw that has not been addressed in the affected release series.
The operational impact of this reflected XSS vulnerability extends beyond simple script execution, as it can enable sophisticated attack vectors such as session hijacking, credential theft, and browser manipulation. Attackers can exploit this weakness by crafting malicious URLs or injecting scripts through form inputs that, when processed by the vulnerable plugin, execute in the victim's browser. This creates a persistent threat vector that can compromise user sessions, steal sensitive information, and potentially allow attackers to perform actions on behalf of authenticated users. The reflected nature means that the attack requires user interaction with a malicious link, but once triggered, the malicious script executes with the privileges of the victim's browser session.
Mitigation strategies should focus on implementing proper input validation and output encoding mechanisms throughout the plugin's codebase. The recommended approach involves sanitizing all user-supplied input before processing and ensuring that any data rendered to web pages is properly encoded using context-appropriate escaping mechanisms. Organizations should immediately update to the latest version of WP Wall where this vulnerability has been patched, as version 1.7.4 or higher should contain the necessary security fixes. Additionally, implementing content security policies and using web application firewalls can provide additional layers of protection against exploitation attempts. This vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and follows ATT&CK technique T1566 for social engineering through malicious links, making it a critical concern for WordPress security posture management.
The vulnerability demonstrates the importance of proper input sanitization in web applications and highlights the need for regular security assessments of third-party plugins. Given that this affects a widely-used WordPress plugin, the potential attack surface is significant, particularly in environments where multiple users interact with the plugin's functionality. Security teams should conduct comprehensive testing to identify similar vulnerabilities in other plugins and themes, as reflected XSS issues often occur in web applications that fail to properly handle user input across multiple interface points.