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**Name of the Vulnerable Software and Affected Versions** vBulletin Forum versions 2.3.x through 2.3.3 **Description** The issue allows remote attackers to steal sensitive information. It involves a SQL injection vulnerability in the calendar.php file, specifically via the `eventid` parameter. **Recommendations** For vBulletin Forum versions 2.3.x through 2.3.3, update to version 2.3.4 to resolve the issue.