Executive Summary

This vulnerability is a Stored Cross Site Scripting (XSS) issue in CiviCRM versions before 6.7. It occurs in the Accounting Batches field, where an authenticated user can inject malicious JavaScript code. This code then executes whenever the affected page is viewed, potentially compromising the security of users who access that page.

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Impact Analysis

The impact of this vulnerability is that an attacker who is authenticated can inject malicious scripts that execute in the context of other users viewing the affected page. This can lead to theft of session cookies, defacement, or other malicious actions performed on behalf of the victim user, potentially compromising user accounts and data.

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Mitigation Strategies

To mitigate this vulnerability, update CiviCRM to version 6.7 or later where the issue is fixed. Additionally, restrict authenticated user permissions to prevent unauthorized input in the Accounting Batches field until the update is applied.

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