Reflected Cross-Site Scripting in We're Open! Opening-Hours

Executive Summary

This is a Cross-site Scripting (XSS) vulnerability in the WordPress plugin 'We’re Open!' affecting versions 2.6 and below. It allows attackers to inject malicious scripts into web pages viewed by users. The vulnerability occurs due to improper neutralization of input during web page generation.

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Detection Guidance

To detect this reflected XSS vulnerability, monitor web traffic for suspicious input patterns in the 'We’re Open!' plugin parameters. Check for unusual JavaScript code in URLs or form submissions targeting the plugin. Use tools like browser developer consoles to inspect network requests for malformed inputs. Patchstack's mitigation rule can also help identify exploitation attempts.

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Impact Analysis

Attackers can exploit this to steal visitor data, hijack accounts, or perform actions on behalf of users. Successful exploitation requires a user to click a malicious link or submit a form, potentially affecting website visitors and users with accounts.

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Mitigation Strategies

Immediately update the 'We’re Open!' plugin to version 2.7 or later. If updating is not possible, apply Patchstack's mitigation rule to block attacks until the update is applied. Remove or restrict access to untrusted users until the plugin is updated to prevent exploitation.

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