CVE-2025-22568 in Post and Page Reactions Plugin
Summary
by MITRE • 01/13/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Paramveer Singh for Arete IT Private Limited Post And Page Reactions allows Reflected XSS.This issue affects Post And Page Reactions: from n/a through 1.0.5.
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Analysis
by VulDB Data Team • 02/13/2025
This vulnerability represents a classic cross-site scripting flaw that exploits improper input handling during web page generation within the Post And Page Reactions plugin for WordPress. The weakness stems from the plugin's failure to adequately sanitize or escape user-supplied data before incorporating it into dynamically generated web content, creating an avenue for malicious actors to inject arbitrary script code into web pages viewed by other users. The vulnerability specifically manifests as a reflected XSS attack, meaning that malicious input is immediately reflected back in the application's response without proper sanitization, allowing attackers to execute scripts in the victim's browser context. This type of vulnerability falls under CWE-79 which categorizes improper neutralization of input during web page generation as a fundamental security weakness in web applications. The affected version range spans from an unspecified starting point through version 1.0.5, indicating that the vulnerability has existed for some time and affects a significant portion of the plugin's user base.
The technical exploitation of this vulnerability occurs when an attacker crafts malicious input that gets processed by the plugin's code and subsequently embedded into HTML output without proper escaping or encoding. When a victim visits a page that contains this malicious input, the browser executes the injected script code, potentially leading to session hijacking, credential theft, or redirection to malicious sites. The reflected nature of this XSS means that the attack payload must be delivered through a URL parameter or form field that gets immediately reflected back in the page response, making it particularly dangerous for web applications that do not properly validate and sanitize all user inputs. Attackers can leverage this vulnerability to bypass security measures such as Content Security Policy if the reflected input is not properly escaped, as demonstrated by the ATT&CK technique T1059.001 for command and scripting interpreter. The vulnerability affects the plugin's core functionality where user interactions with posts and pages trigger the execution path that processes untrusted data, creating a direct attack surface for malicious code injection.
The operational impact of this vulnerability extends beyond simple script execution to potentially compromise entire user sessions and enable more sophisticated attacks. An attacker could exploit this vulnerability to steal authentication cookies, redirect users to phishing sites, or inject malicious content that appears legitimate to users. The reflected XSS nature makes this particularly dangerous in targeted attacks where an attacker sends a specially crafted URL to a victim, who then unknowingly executes the malicious script upon visiting the page. This vulnerability can affect any user who interacts with the plugin's functionality, whether through comments, social sharing features, or other interactive elements that process user input. The impact is amplified by the fact that the vulnerability affects the plugin's core web page generation process, meaning that any page that utilizes the plugin's features could become a potential attack vector. Organizations using this plugin without proper input validation measures face significant risk of unauthorized access and data compromise, as the vulnerability essentially allows attackers to execute arbitrary code in the context of any user's browser session. The attack surface is particularly concerning given that WordPress plugins often have broad access to user data and system functionality.
Mitigation strategies for this vulnerability should focus on implementing robust input validation and output encoding practices throughout the plugin's codebase. The most effective immediate solution involves implementing proper HTML escaping of all user-supplied input before rendering it in web pages, which directly addresses the CWE-79 category of weaknesses. Developers should adopt a defense-in-depth approach by implementing multiple layers of protection including input sanitization, output encoding, and Content Security Policy headers to prevent script execution. The recommended approach includes validating all input parameters against a strict whitelist of allowed characters and patterns, implementing proper encoding functions for HTML, JavaScript, and URL contexts, and ensuring that all user-generated content is properly escaped before being incorporated into dynamic web pages. Additionally, organizations should implement regular security audits of their WordPress plugins, maintain updated versions of all software components, and consider implementing web application firewalls to detect and block malicious input patterns. The ATT&CK framework suggests implementing detection measures such as monitoring for suspicious URL parameters and user agent patterns that might indicate XSS attempts. Regular patch management and security updates are essential to protect against this and similar vulnerabilities, as the vulnerability affects a specific version range that has likely been addressed in newer releases through proper input sanitization and output encoding mechanisms.