Executive Summary

CVE-2026-39484 is an Open Redirection vulnerability in the WordPress Hide My WP Ghost plugin versions prior to 7.0.00.

This vulnerability occurs because the plugin improperly validates redirect URLs, allowing attackers to redirect users from a legitimate site to a malicious one.

Exploitation requires user interaction, such as clicking a malicious link or visiting a crafted page, and can be initiated without authentication but requires a privileged user to perform the triggering action.

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Impact Analysis

This vulnerability can be leveraged in phishing attacks by tricking users into visiting malicious sites through redirected URLs.

Although the severity is considered low (CVSS score 4.7), attackers can use this issue in mass-exploit campaigns to compromise user trust and potentially steal sensitive information.

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Detection Guidance

This vulnerability involves an Open Redirection issue in the Hide My WP Ghost plugin prior to version 7.0.00, where attackers can redirect users to malicious sites via crafted URLs.

Detection can involve monitoring for suspicious URL redirection attempts originating from the affected plugin, especially URLs that redirect to untrusted external domains.

Since the vulnerability requires user interaction with crafted links or forms, network detection could include inspecting HTTP requests for unusual redirect parameters or unexpected external redirect destinations.

• Use web server logs or proxy logs to search for HTTP requests containing redirect parameters that point to external or untrusted domains.
• Example command to search Apache logs for suspicious redirect parameters (assuming redirect parameter is 'redirect_to'): grep -i 'redirect_to=http' /var/log/apache2/access.log
• Use tools like curl or wget to test suspected URLs manually to verify if they perform an open redirect.
• Example curl command: curl -I 'https://yourdomain.com/path?redirect_to=http://malicious-site.com'

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Mitigation Strategies

The primary and recommended mitigation step is to update the Hide My WP Ghost plugin to version 7.0.00 or later, where this vulnerability has been patched.

If immediate updating is not possible, consider disabling the plugin temporarily to prevent exploitation.

Additionally, monitor and restrict user inputs that control redirection URLs to ensure they only point to trusted internal locations.

Patchstack also offers auto-update features for vulnerable plugins, which can facilitate rapid mitigation.

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Compliance Impact

The vulnerability in the Hide My WP Ghost plugin allows attackers to redirect users to malicious sites, facilitating phishing attacks. Such phishing attacks can lead to unauthorized disclosure of personal or sensitive information.

While the CVE description and resources do not explicitly mention compliance with standards like GDPR or HIPAA, phishing attacks enabled by this vulnerability could potentially result in breaches of personal data confidentiality and integrity, which are critical aspects of these regulations.

Therefore, organizations using affected versions of the plugin may face increased risk of non-compliance with data protection regulations if the vulnerability is exploited and leads to data breaches.

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