CVE-2023-7303 in q2apro-on-site-notifications
Summary
by MITRE • 05/08/2025
A vulnerability, which was classified as problematic, was found in q2apro q2apro-on-site-notifications up to 1.4.6. This affects the function process_request of the file q2apro-onsitenotifications-page.php. The manipulation leads to cross site scripting. It is possible to initiate the attack remotely. Upgrading to version 1.4.8 is able to address this issue. The patch is named 0ca85ca02f8aceb661e9b71fd229c45d388ea5b5. It is recommended to upgrade the affected component.
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Analysis
by VulDB Data Team • 05/08/2025
The vulnerability identified as CVE-2023-7303 represents a cross site scripting flaw in the q2apro-on-site-notifications plugin for Q2A platforms, specifically affecting versions up to 1.4.6. This security weakness resides within the process_request function located in the q2apro-onsitenotifications-page.php file, making it a critical concern for website administrators and security professionals monitoring open source content management systems. The vulnerability classification as problematic indicates significant risk potential for affected systems, particularly given its remote exploitability nature.
The technical implementation of this XSS vulnerability occurs through improper input validation and output encoding within the plugin's request processing mechanism. When the process_request function handles user-supplied data without adequate sanitization, malicious actors can inject malicious scripts that execute in the context of other users' browsers. This type of flaw falls under CWE-79 which specifically addresses cross site scripting vulnerabilities, where the weakness allows attackers to inject client-side scripts into web applications. The remote exploitation capability means that attackers do not need physical access to the system but can leverage the vulnerability through web-based attacks targeting the affected plugin installation.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable attackers to perform various malicious activities including session hijacking, data theft, and unauthorized actions within the compromised user context. The vulnerability affects the entire user base of the affected Q2A installations, potentially allowing attackers to escalate privileges or gain unauthorized access to sensitive information. Security practitioners must consider this vulnerability as part of broader attack surface analysis, particularly when evaluating the security posture of forums and community platforms that rely on Q2A frameworks. The remote nature of exploitation means that threat actors can target multiple installations simultaneously without requiring direct system access, making this vulnerability particularly dangerous for large-scale deployments.
Mitigation strategies for CVE-2023-7303 require immediate action to upgrade the affected q2apro-on-site-notifications plugin to version 1.4.8, which contains the necessary patch identified by the commit hash 0ca85ca02f8aceb661e9b71fd229c45d388ea5b5. This upgrade process should be performed systematically across all affected installations, with proper testing to ensure compatibility with existing site functionality. Organizations should also implement additional defensive measures including input validation at multiple layers, output encoding, and regular security assessments of third-party plugins. The ATT&CK framework categorizes this vulnerability under the T1059.007 technique for script injection attacks, highlighting the need for comprehensive security controls that address both the specific vulnerability and broader attack patterns. Network monitoring should be enhanced to detect potential exploitation attempts, while administrators should maintain updated threat intelligence feeds to track similar vulnerabilities in related software components.