CVE-2026-47230
Received Received - Intake

Insecure File Renaming in Admidio via IDOR

Vulnerability report for CVE-2026-47230, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-08-12

Last updated on: 2026-08-12

Assigner: GitHub, Inc.

Description

Admidio is an open-source user management solution. Prior to version 5.0.10, `modules/documents-files.php` mode `file_rename_save` shares the same root-cause shape as the cross-folder move bug (`05-documents-cross-folder-move-idor.md`): the top-level rights check at lines 79-89 validates `hasUploadRight()` on the URL parameter `folder_uuid`, but the rename operation acts on `file_uuid` β€” a separate URL parameter β€” without re-checking the folder that actually contains the file. `DocumentsService::renameFile()` resolves the target file via `getFileForDownload()` (which permits view-readable files) but does not require upload right on the file's source folder. Result: a user with upload right on any folder A can rename a file in folder B as long as they can view it. They can also overwrite the file's description. Version 5.0.10 contains a fix.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-08-12
Last Modified
2026-08-12
Generated
2026-08-12
AI Q&A
2026-08-12
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
admidio admidio to 5.0.10 (exc)
admidio admidio 5.0.10

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
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.

Attack-Flow Graph

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Executive Summary

CVE-2026-47230 is an Insecure Direct Object Reference (IDOR) vulnerability in Admidio affecting versions 5.0.9 and earlier. It allows a user with upload rights to any folder to rename files or modify their descriptions in folders they cannot upload to, as long as they have view rights on those files. The issue occurs because the system checks upload rights on the folder specified in the URL rather than the folder containing the actual file.

Detection Guidance

Check for unauthorized file renames or description changes in Admidio versions 5.0.9 and earlier. Review logs for requests to documents-files.php with mode=file_rename_save and verify if users without proper folder upload rights performed these actions.

Impact Analysis

This vulnerability can lead to unauthorized file renaming, description changes, or potential stored cross-site scripting (XSS) if descriptions are rendered as raw HTML. It may cause defacement of public announcements, confusion through misleading filenames, or compromise the integrity of files visible to all users with download rights.

Mitigation Strategies

Upgrade Admidio to version 5.0.10 or later to apply the security fix. If immediate upgrade is not possible, restrict access to the documents-files.php file or disable the file_rename_save mode until patched.

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