CVE-2026-89257
Received Received - Intake

Insecure Direct Object Reference (IDOR) in AVideo

Publication date: 2026-09-11

Last updated on: 2026-09-11

Assigner: VulnCheck

Description
AVideo through 29.0 contains an insecure direct object reference (IDOR) vulnerability in objects/categoryDeleteAssets.json.php. The endpoint validates only the Category::canCreateCategory() capability and a CSRF nonce before passing the attacker-supplied $_REQUEST['id'] to Category::deleteAssets(), which recursively removes {systemRootPath}videos/categories/assets/{id}/. It omits the Category::userCanEditCategory() ownership check enforced by the sibling Category::delete(). On installations where the non-default usersCanCreateNewCategories setting is enabled, an authenticated non-admin user with the canUpload capability can send a POST request with an arbitrary category ID and recursively delete any category's on-disk asset directory (icons/images). Category records and videos are not deleted. As of the advisory publication no patched version was available.

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Meta Information

Published
2026-09-11
Last Modified
2026-09-11
Generated
2026-09-11
AI Q&A
2026-09-11
EPSS Evaluated
N/A
NVD
CVE-2026-89257
EUVD
EUVD-2026-76069

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
avideo avideo to 29.0 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

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Executive Summary

CVE-2026-89257 is an insecure direct object reference (IDOR) vulnerability in AVideo through version 29.0. It exists in the objects/categoryDeleteAssets.json.php endpoint which fails to verify user ownership before deleting asset directories. The endpoint only checks for Category::canCreateCategory() capability and a CSRF nonce, allowing attackers to supply arbitrary category IDs and recursively delete directories like videos/categories/assets/{id}/ without proper authorization.

Detection Guidance

To detect this vulnerability, monitor for unauthorized POST requests to /objects/categoryDeleteAssets.json.php with arbitrary category IDs. Check for unexpected deletions in {systemRootPath}videos/categories/assets/{id}/ directories. Review server logs for suspicious activity from non-admin users with canUpload capability.

Impact Analysis

This vulnerability allows authenticated non-admin users with canUpload capability to delete any category's asset directories (icons/images) if the non-default usersCanCreateNewCategories setting is enabled. While category records and videos remain intact, the deletion of assets could disrupt media display, require regeneration of assets, and potentially cause temporary service disruption until restored.

Mitigation Strategies

Immediately disable the non-default usersCanCreateNewCategories setting in AVideo configuration. Restrict POST access to /objects/categoryDeleteAssets.json.php to admin users only. Temporarily revoke canUpload capability from non-admin users until a patch is available.

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