CVE-2025-15611 describes a medium severity vulnerability in the AYS Pro Popup Box WordPress plugin, specifically affecting versions prior to 5.5.0. This vulnerability allows unauthenticated attackers to perform Cross-Site Request Forgery (CSRF) attacks due to improper nonce validation in the add_or_edit_popupbox() function. When an authenticated administrator visits a malicious page, the attacker can create or modify popups with arbitrary JavaScript that executes both in the admin panel and on the frontend.
The CVSS score for this vulnerability is 5.4, indicating a medium severity level. This score is significant as it reflects a moderate risk to organizations that utilize the AYS Pro Popup Box plugin. The vulnerability's exploitation status is currently unconfirmed, but organizations must be aware of the potential for unauthorized actions if the vulnerability is not addressed.
Organizations should prioritize patching this vulnerability immediately to prevent any unauthorized access or actions within their WordPress installations. The risk to organizations includes potential data compromise and unauthorized modifications to the content displayed on their sites.
In light of this vulnerability, it is critical for security teams to evaluate their use of the AYS Pro Popup Box plugin and ensure that they are running the latest version to mitigate risks associated with CVE-2025-15611.
Vulnerability Details
The Popup Box WordPress plugin before 5.5.0 does not properly validate nonces in the add_or_edit_popupbox() function before saving popup data, allowing unauthenticated attackers to perform Cross-Site Request Forgery attacks. When an authenticated admin visits a malicious page, the attacker can create or modify popups with arbitrary JavaScript that executes in the admin panel and frontend.
This vulnerability is classified under CWE-918. The CVSS score of 5.4 indicates a medium severity level, with the following metrics: attack vector is NETWORK, attack complexity is LOW, privileges required are LOW, and user interaction is REQUIRED. The scope is CHANGED with a confidentiality impact of LOW, integrity impact of LOW, and no availability impact.
Technical Analysis
The root cause of this vulnerability lies in the lack of proper nonce validation in the add_or_edit_popupbox() function. Nonce tokens are critical for preventing CSRF attacks; without them, malicious pages can exploit this vulnerability.
The attack vector is NETWORK, meaning it can be exploited remotely. The attack complexity is LOW, as the attacker only needs to trick an authenticated user into visiting a malicious page. Privileges required are LOW, as the attacker does not need special permissions to initiate the attack, and user interaction is REQUIRED for the attack to succeed.
The vulnerability has a confidentiality impact of LOW, indicating that sensitive information may not be directly compromised, but the integrity impact is also LOW, which means that data may be modified without authorization. There is no availability impact associated with this vulnerability.
Risk & Impact Analysis
Risk to organizations includes potential unauthorized actions within the admin panel, which can lead to the injection of malicious scripts that may affect all users visiting the frontend. The blast radius of this vulnerability is significant, as it allows attackers to execute arbitrary JavaScript that could compromise user data or alter site functionality.
Organizations should assess their deployment of the AYS Pro Popup Box plugin and prioritize remediation based on the CVSS score. Given the current exploitability status, organizations should take proactive measures to patch this vulnerability in their environments to mitigate risks.
The urgency for defenders is classified as medium; organizations should schedule remediation in their patch management cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions for this vulnerability are all versions of the AYS Pro Popup Box plugin prior to 5.5.0. It is critical for users of this plugin to ensure they update to the latest version to mitigate the risks associated with this vulnerability.
Mitigation & Remediation
To mitigate this vulnerability, organizations must upgrade to version 5.5.0 or later of the AYS Pro Popup Box plugin. If immediate upgrading is not possible, organizations should consider implementing additional security measures, such as restricting access to the admin panel and conducting thorough security audits on all user inputs.
Monitoring for unusual activity in the admin panel can also provide early detection of potential exploitation attempts. For organizations seeking to enhance their security posture, consider engaging in penetration testing to identify similar vulnerabilities across their applications.
Detection Guidance
Organizations should monitor logs for unusual requests to the add_or_edit_popupbox() function and look for any signs of unauthorized modifications to popup data. Behavioral anomalies in user interactions with the admin panel may indicate attempts to exploit this vulnerability.
It is also important to keep an eye on network traffic for suspicious activity that may correlate with the exploitation of this vulnerability.
AppSecure Threat Intelligence Insight
CVE-2025-15611 represents a significant threat to WordPress installations using the AYS Pro Popup Box plugin. This vulnerability underscores the importance of nonce validation and the potential consequences of neglecting security measures in plugin development.
Organizations must learn from this incident by implementing rigorous security practices in the development and maintenance of their web applications. Regular security assessments and updates should be a standard part of the development lifecycle.
For further insights into effective security measures, organizations can refer to our resources on vulnerability management programs and penetration testing methodologies that can aid in enhancing their security posture.
Additionally, organizations should adopt a proactive security mindset to anticipate and mitigate potential vulnerabilities before they can be exploited.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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