Executive Summary

CVE-2026-39715 is a Broken Access Control vulnerability in the WordPress AnyTrack Affiliate Link Manager Plugin, affecting versions up to and including 1.5.5.

The vulnerability arises from missing authorization, authentication, or nonce token checks within certain plugin functions, which allows unauthenticated users to perform actions that normally require higher privileges.

It falls under the OWASP Top 10 category A1: Broken Access Control.

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Impact Analysis

This vulnerability allows unauthenticated users to perform privileged actions without proper authorization, potentially compromising the security of the affected website.

Although it can be exploited in mass campaigns targeting many websites, it is considered unlikely to be exploited with significant impact.

The CVSS severity score is 5.3, indicating a low priority and low severity impact.

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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Mitigation Strategies

The immediate mitigation involves updating the affected AnyTrack Affiliate Link Manager plugin to a version newer than 1.5.5.

If updating the plugin is not possible, users are advised to seek assistance from their hosting provider or web developer to implement protective measures.

Patchstack also offers vulnerability mitigation services to protect affected sites.

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Compliance Impact

The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

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Detection Guidance

This vulnerability involves missing authorization checks in the AnyTrack Affiliate Link Manager WordPress plugin, allowing unauthenticated users to perform privileged actions. Detection typically involves checking for unauthorized access attempts or unusual activity related to the plugin's functions.

Since the vulnerability is in a WordPress plugin, detection can include reviewing web server logs for suspicious HTTP requests targeting the plugin endpoints or functions that should require authorization.

Specific commands to detect exploitation attempts are not provided in the available resources. However, general approaches include:

• Using web server log analysis tools (e.g., grep) to search for requests to the AnyTrack Affiliate Link Manager plugin paths.
• Monitoring for HTTP requests with unusual parameters or methods that could indicate attempts to bypass access control.
• Employing WordPress security plugins or scanners that can detect broken access control vulnerabilities or unauthorized access attempts.

Immediate mitigation involves updating the plugin to a patched version if available or consulting with hosting providers or developers for custom detection and protection measures.

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