CVE-2025-58873 in Pushe Web Push Notification Plugin
Summary
by MITRE • 09/05/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in pusheco Pushe Web Push Notification allows Stored XSS. This issue affects Pushe Web Push Notification: from n/a through 0.5.0.
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Analysis
by VulDB Data Team • 09/05/2025
The CVE-2025-58873 vulnerability represents a critical cross-site scripting flaw in the pusheco Pushe Web Push Notification plugin, specifically impacting versions ranging from the initial release through 0.5.0. 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 scripts can be permanently stored on the server and subsequently executed whenever users access affected web pages. This particular weakness occurs during the web page generation process where input validation and sanitization mechanisms fail to properly neutralize user-supplied data before it is rendered in web content.
The technical exploitation of this vulnerability enables attackers to inject malicious JavaScript code into the plugin's web interface through improperly validated input fields. When legitimate users view web pages generated by the affected plugin, their browsers execute the injected malicious scripts, potentially leading to session hijacking, credential theft, or redirection to malicious websites. The stored nature of this XSS vulnerability means that the malicious payload persists on the server and affects all users who interact with the vulnerable system, making it particularly dangerous for widespread impact. Attackers can leverage this weakness to gain unauthorized access to user sessions, modify web content, or perform actions on behalf of authenticated users.
The operational impact of CVE-2025-58873 extends beyond simple script execution, as it can be exploited to compromise entire user sessions and potentially escalate privileges within the affected web application. This vulnerability directly violates the principle of least privilege and can enable attackers to perform actions such as modifying user permissions, accessing sensitive data, or redirecting users to phishing sites. From an attacker's perspective, this vulnerability aligns with ATT&CK technique T1566.001 for initial access through malicious links and T1071.001 for application layer protocol usage. The affected plugin's web push notification functionality becomes a vector for delivering malicious payloads to unsuspecting users, making it a particularly effective attack surface for social engineering campaigns.
Mitigation strategies for CVE-2025-58873 should prioritize immediate patching of the affected plugin to version 0.5.1 or later, which contains the necessary input sanitization and output encoding fixes. Organizations should implement comprehensive input validation mechanisms that properly encode user-supplied data before rendering it in web contexts, following the principle of defense in depth. The implementation of Content Security Policy headers can provide additional protection against XSS attacks by restricting the sources from which scripts can be loaded. Security monitoring should include detection of unusual patterns in web application logs that might indicate exploitation attempts. Furthermore, regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other web applications and plugins within the organization's infrastructure. The vulnerability demonstrates the critical importance of proper input sanitization and output encoding practices in preventing XSS attacks, which is a fundamental requirement for secure web application development and aligns with OWASP Top Ten security principles.