CVE-2025-23593 in EmailPress Plugin
Summary
by MITRE • 02/03/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NotFound EmailPress allows Reflected XSS. This issue affects EmailPress: from n/a through 1.0.
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Analysis
by VulDB Data Team • 02/06/2025
The vulnerability identified as CVE-2025-23593 represents a critical cross-site scripting flaw within the EmailPress plugin for WordPress systems. This weakness falls under the category of improper input neutralization during web page generation, creating an environment where malicious scripts can be injected and executed within the context of a user's browser. The vulnerability specifically manifests as a reflected cross-site scripting attack, where the malicious payload is reflected off the web server back to the user's browser, typically through a malicious URL or form submission. The affected version range indicates that all versions from the initial release through version 1.0 are susceptible to this attack vector, suggesting a fundamental flaw in the plugin's input handling mechanisms that was not adequately addressed in its development lifecycle.
The technical implementation of this vulnerability occurs when the EmailPress plugin fails to properly sanitize or escape user-supplied input before incorporating it into dynamically generated web pages. When a user visits a maliciously crafted URL that contains script code within parameters, the plugin processes this input without adequate validation or encoding, allowing the script to execute within the victim's browser session. This reflected XSS vulnerability operates by exploiting the web application's failure to neutralize potentially dangerous characters such as angle brackets, quotes, and script tags that would normally be interpreted as part of the HTML structure rather than executable code. The flaw directly aligns with CWE-79, which specifically addresses improper neutralization of input during web page generation, and demonstrates how inadequate input validation can create persistent security weaknesses in web applications.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking, as it can enable attackers to perform a wide range of malicious activities within the context of authenticated users. An attacker could potentially leverage this vulnerability to steal user credentials, modify content, redirect users to malicious sites, or even escalate privileges within the affected WordPress environment. The reflected nature of the attack means that exploitation requires user interaction with a malicious link, but once clicked, the payload executes automatically in the victim's browser, making it particularly dangerous for end users who may not be security-aware. This vulnerability represents a significant risk to any organization relying on EmailPress for email management, as it could compromise the integrity of their email communications and potentially provide attackers with access to sensitive user data or system resources.
Mitigation strategies for CVE-2025-23593 should prioritize immediate patching of the EmailPress plugin to version 1.1 or later, if available, as this would address the underlying input sanitization issues. Organizations should also implement additional defensive measures including the deployment of web application firewalls that can detect and block malicious script payloads, the implementation of content security policies to restrict script execution, and the regular monitoring of web server logs for suspicious activity patterns. Security teams should conduct comprehensive vulnerability assessments to identify other potential XSS vulnerabilities within their WordPress installations and ensure that all plugins and themes are regularly updated to maintain security posture. The remediation process should also include user education to help prevent accidental interaction with malicious links and the implementation of proper input validation across all web applications to prevent similar issues from occurring in other components of the system architecture.