Unauthenticated Article Overwrite in Joomla Event Manager

Executive Summary

This vulnerability allows unauthenticated users to overwrite and force-publish articles in the Joomla Event Manager extension versions before 5.0.1. An attacker can use their own session token to republish or modify any article linked to an event.

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Detection Guidance

This vulnerability allows unauthenticated users to overwrite and republish articles in Joomla Event Manager versions before 5.0.1. To detect it, check for unauthorized article modifications or unexpected publishing actions in Joomla logs. Inspect the extension version and monitor for suspicious POST requests to event-related endpoints.

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Impact Analysis

Attackers could alter or republish articles without authorization, potentially spreading misinformation, defacing content, or disrupting event information. This could damage reputation, mislead users, or cause operational issues for websites using the vulnerable extension.

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Compliance Impact

This vulnerability allows unauthenticated users to overwrite and republish articles in Joomla Event Manager, which could lead to unauthorized changes to published content. This may impact compliance with GDPR by potentially exposing or altering personal data in articles without proper authorization, and with HIPAA if protected health information is involved.

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Mitigation Strategies

Update Joomla Event Manager to version 5.0.1 or later to address the unauthenticated article overwrite and force-publish vulnerability.

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