Privilege Escalation in WS Form LITE WordPress Plugin

Compliance Impact

The vulnerability allows authenticated users with subscriber-level access to modify plugin settings without proper authorization. This could potentially lead to unauthorized changes in security-related configurations such as reCAPTCHA keys and API keys.

Such unauthorized modifications may increase the risk of data exposure or manipulation, which could impact compliance with standards like GDPR or HIPAA that require strict access controls and protection of personal data.

However, the provided information does not explicitly detail direct compliance violations or specific regulatory impacts.

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Executive Summary

The vulnerability CVE-2026-11562 affects the WS Form LITE plugin for WordPress versions prior to 1.11.8.

It allows authenticated users with subscriber-level access or higher to modify the plugin's settings without proper authorization checks.

An attacker with a subscriber account can exploit this by retrieving a nonce exposed to logged-in users, then sending a crafted request to update settings such as reCAPTCHA keys, IP-lookup URLs, Google Maps API keys, and uninstall behavior.

This issue is classified as an authentication bypass (CWE-287) with a CVSS score of 4.3 (medium severity).

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Impact Analysis

This vulnerability allows users with minimal privileges (subscriber-level access) to change critical plugin settings without proper authorization.

Such unauthorized modifications could lead to security risks, including altering reCAPTCHA keys, IP-lookup URLs, Google Maps API keys, or uninstall behavior, potentially compromising site security or functionality.

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Detection Guidance

This vulnerability can be detected by checking if the WS Form LITE WordPress plugin version is prior to 1.11.8, as those versions are affected.

To detect exploitation attempts on your system or network, monitor for authenticated user requests that attempt to update WS Form LITE plugin settings without proper authorization.

Specifically, look for HTTP requests from subscriber-level or higher users that include actions to update settings such as reCAPTCHA keys, IP-lookup URLs, Google Maps API keys, or uninstall behavior.

While no specific commands are provided, you can use web server access logs or WordPress audit logs to filter for POST requests to the plugin's settings-update endpoints originating from authenticated users with subscriber roles.

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Mitigation Strategies

The immediate mitigation step is to update the WS Form LITE WordPress plugin to version 1.11.8 or later, where this vulnerability has been fixed.

Until the update can be applied, restrict subscriber-level user access or higher to trusted users only, as the vulnerability requires authenticated user access.

Additionally, monitor and audit plugin settings changes to detect any unauthorized modifications.

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