The Hero Mega Menu - Responsive WordPress Menu Plugin is vulnerable to reflected cross-site scripting (XSS) due to insufficient input sanitization and output escaping. This vulnerability allows unauthenticated attackers to inject arbitrary web scripts into pages that execute if they can successfully trick a user into performing an action, such as clicking on a link. The vulnerability affects all versions of the plugin up to and including version 1.16.5.
With a CVSS score of 6.1, this vulnerability is classified as medium severity. The potential risk to organizations includes unauthorized execution of scripts, leading to data theft or other malicious activities. Given the nature of reflected XSS, the urgency for organizations to address this vulnerability is moderate, and it should be prioritized in their patch cycle.
Currently, there are no known exploits or public proof-of-concept (PoC) available, but the ease of exploitation via social engineering makes this a concern for administrators using the affected plugin. As such, organizations should remain vigilant and monitor for any updates related to this vulnerability.
Organizations using this plugin are advised to check for the latest updates and apply necessary patches to mitigate the risk associated with this vulnerability.
Vulnerability Details
The Hero Mega Menu - Responsive WordPress Menu Plugin plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'index' parameter in all versions up to, and including, 1.16.5 due to insufficient input sanitization and output escaping. This vulnerability allows attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
The vulnerability has a CVSS score of 6.1, indicating a medium severity level. The attack vector is network-based and requires user interaction to exploit. According to the CVSS vector, it has low attack complexity and does not require any privileges.
The affected plugin version is 1.16.5 and prior. The vulnerability was published on March 5, 2025, and is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Technical Analysis
The root cause of this vulnerability stems from inadequate input validation and output encoding practices in the Hero Mega Menu plugin. Attackers can craft a malicious input that gets reflected back to users, allowing them to execute arbitrary scripts in the context of the victim's browser.
The attack vector is network-based, indicating that an attacker could exploit this vulnerability without physical access to the target system. The complexity of the attack is low, as it involves tricking the user into clicking a crafted link. No privileges are required for the attack, making it accessible to any unauthenticated user.
User interaction is required, as the attack relies on the user performing an action such as clicking a link. The impact on confidentiality and integrity is low, while there is no impact on availability. As such, organizations should ensure they have proper security measures and user training to mitigate the risks associated with social engineering attempts.
Risk & Impact Analysis
The risk to organizations includes unauthorized access, data theft, or other malicious activities resulting from the exploitation of this vulnerability. Given that the attack requires user interaction, the blast radius may be limited to users who fall victim to the attack, but the potential for widespread impact exists if multiple users are affected.
Organizations should assess the urgency of addressing this vulnerability based on their specific deployment of the Hero Mega Menu plugin. Although the CVSS score indicates a medium severity, the potential for exploitation through social engineering means that organizations should prioritize this vulnerability in their patch cycle, particularly if they have a significant number of users who may be targeted.
Monitoring for this vulnerability should be coupled with user education on recognizing phishing attempts and malicious links. Organizations that do not address this vulnerability risk falling victim to attacks that could compromise user data and organizational integrity.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of the Hero Mega Menu - Responsive WordPress Menu Plugin up to and including version 1.16.5. Organizations using this plugin should verify their version and apply patches as necessary.
Mitigation & Remediation
Organizations should update the Hero Mega Menu plugin to the latest version to mitigate this vulnerability. If an update is not available, consider disabling the plugin until a patch can be applied. Additionally, implement input validation and output encoding practices for any user input to reduce the risk of XSS attacks.
For further guidance, organizations may want to consult a penetration testing service to assess their overall security posture.
Detection Guidance
Organizations should monitor logs for unusual URL patterns involving the 'index' parameter. Additionally, track user behavior for any anomalous actions that could indicate social engineering attempts or successful XSS exploitation.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability highlights the ongoing need for effective input sanitization and user education in preventing XSS attacks. This case underscores the importance of regular updates to plugins and software components to mitigate risks associated with known vulnerabilities.
Organizations should view this incident as a reminder to maintain a proactive security posture, including vulnerability assessments and timely remediation. Adopting a comprehensive security strategy that encompasses user training and robust security practices is essential for minimizing exposure to future threats.
For more insights on maintaining security best practices, organizations can refer to resources such as the penetration testing methodology guide.
Additionally, integrating continuous security testing practices can further help in identifying 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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