Executive Summary

CVE-2026-39697 is a Broken Access Control vulnerability in the WordPress plugin "MAIO – The new AI GEO / SEO tool" affecting versions up to and including 6.3.6.

This vulnerability arises from missing authorization, authentication, or nonce token checks, which allows unauthenticated users to perform actions that should be restricted to higher privileged users.

It is classified as an OWASP Top 10 A1 issue and has a CVSS score of 5.3, indicating a low severity impact.

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Impact Analysis

This vulnerability allows unauthorized users to perform privileged actions on affected websites using the MAIO plugin, potentially compromising site integrity or functionality.

Although the CVSS score is low (5.3) and it is considered unlikely to be exploited with significant effect, it has been observed in mass-exploit campaigns targeting many websites indiscriminately.

No official patch is currently available, so immediate mitigation involves updating the plugin or seeking assistance from hosting providers or web developers.

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Detection Guidance

This vulnerability is a Broken Access Control issue in the WordPress plugin "MAIO – The new AI GEO / SEO tool" allowing unauthenticated users to perform privileged actions. Detection typically involves checking for unauthorized access attempts or unusual activity related to this plugin.

Since no specific detection commands or signatures are provided, it is recommended to monitor web server logs for suspicious requests targeting the MAIO plugin endpoints or unusual privilege escalation attempts.

Additionally, scanning the WordPress installation to verify the plugin version (up to and including 6.3.6) can help identify vulnerable instances.

Example commands to check the plugin version on a WordPress site might include:

• Using WP-CLI to list installed plugins and their versions: wp plugin list
• Searching web server logs for suspicious requests: grep -i 'maio' /var/log/apache2/access.log

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Mitigation Strategies

The immediate mitigation step is to update the affected MAIO plugin to a version that addresses the vulnerability. However, no official patch is currently available.

If updating is not possible, users should seek assistance from their hosting provider or web developer to implement temporary access control measures or workarounds.

Additionally, monitoring and restricting access to the plugin's functionality and endpoints can help reduce the risk of exploitation.

It is also advisable to stay informed through security intelligence services like Patchstack for any future patches or mitigation advice.

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Compliance Impact

The vulnerability CVE-2026-39697 is a Broken Access Control issue in the MAIO WordPress plugin, allowing unauthorized users to perform privileged actions. Such missing authorization controls can potentially lead to unauthorized access to sensitive data or system functions.

While the provided information does not explicitly mention compliance with standards like GDPR or HIPAA, broken access control vulnerabilities generally pose risks to data confidentiality and integrity, which are critical requirements under these regulations.

Therefore, if exploited, this vulnerability could negatively impact compliance with regulations that mandate strict access controls and protection of personal or sensitive data.

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