CVE-2026-32818
Received Received - Intake
Authorization Bypass Allows Deletion in Admidio Forum Module

Publication date: 2026-03-19

Last updated on: 2026-03-23

Assigner: GitHub, Inc.

Description
Admidio is an open-source user management solution. In versions 5.0.0 through 5.0.6, the forum module in Admidio does not verify whether the current user has permission to delete forum topics or posts. Both the topic_delete and post_delete actions in forum.php only validate the CSRF token but perform no authorization check before calling delete(). Any authenticated user with forum access can delete any topic (with all its posts) or any individual post by providing its UUID. This is inconsistent with the save/edit operations, which properly check isAdministratorForum() and ownership before allowing modifications. Any logged-in user can permanently and irreversibly delete any forum topic (including all its posts) or any individual post by simply knowing its UUID (which is publicly visible in URLs), completely bypassing authorization checks. This issue has been fixed in version 5.0.7.
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Meta Information
Published
2026-03-19
Last Modified
2026-03-23
Generated
2026-06-16
AI Q&A
2026-03-20
EPSS Evaluated
2026-06-15
NVD
CVE-2026-32818
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
admidio admidio From 5.0.0 (inc) to 5.0.7 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
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Executive Summary

This vulnerability exists in Admidio versions 5.0.0 through 5.0.6 within the forum module. The issue is that the forum.php file's topic_delete and post_delete actions only check the CSRF token but do not verify if the user has permission to delete forum topics or posts. As a result, any authenticated user with forum access can delete any topic or individual post by providing its UUID, which is publicly visible in URLs. This bypasses the usual authorization checks that are properly enforced during save or edit operations.

The deletion is permanent and irreversible, allowing any logged-in user to delete forum content without proper authorization. This vulnerability was fixed in version 5.0.7.

Impact Analysis

This vulnerability can lead to unauthorized deletion of forum topics and posts by any authenticated user. Since the deletion is permanent and irreversible, it can result in loss of important data, disruption of forum discussions, and potential damage to the integrity and availability of the forum content.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

The vulnerability is fixed in Admidio version 5.0.7. Immediate mitigation involves upgrading Admidio to version 5.0.7 or later.

Until the upgrade can be performed, restrict authenticated user access to the forum module to trusted users only, as any authenticated user with forum access can delete topics or posts without proper authorization checks.

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