elFinder MySQL has a SQL Injection in its Volume Driver (elFinderVolumeMySQL)
Summary
An authenticated SQL injection vulnerability in the elFinder MySQL volume driver (elFinderVolumeMySQL) allows any logged-in user, including users with read-only access to the affected volume, to inject SQL through a crafted target file hash. Successful exploitation can lead to unauthorized data disclosure and denial of service.
This vulnerability only affects installations configured to use the MySQL volume driver. Installations using the default LocalFileSystem driver are not affected.
Description
A vulnerability in elFinder's MySQL volume driver (elFinderVolumeMySQL) allows authenticated SQL injection through a crafted file hash passed via the target parameter.
The issue is caused by two behaviors working together:
- File hashes are decoded without validating that the decoded value is a valid MySQL object identifier.
- The decoded value is then used in MySQL driver queries, including
cacheDir(),_joinPath(),_stat(), and_fopen().
Because the MySQL storage schema uses numeric id and parent_id values, an authenticated user can supply a crafted hash that alters the intended SQL query logic. Successful exploitation can lead to unauthorized data disclosure and denial of service. The extent of impact depends on the privileges granted to the configured MySQL account.
This vulnerability only affects installations configured to use the MySQL volume driver. Installations using the default LocalFileSystem driver are not affected.
Impact
An authenticated user, including a user with read-only access to the affected volume, can exploit this issue to:
- disclose data accessible to the configured MySQL account, including file contents stored by the driver and database metadata
- trigger denial of service through expensive or unexpectedly broad query results that can lead to excessive memory consumption
The severity of data exposure depends on the privileges granted to the configured MySQL account.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | studio-42/elfinder | < 2.1.68 | 2.1.68 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-89- Platform
- Composer
- Package
studio-42/elfinder- Disclosed
- 11.05.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-c3gj-q88f-7hqj - CC BY 4.0
Vulnerability history: studio-42/elfinder
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 18
- First → latest
- 06.2021 09.2026
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- Critical 7
- High 8
- Medium 3
Disclosures per year
- 2021: 2
- 2022: 9
- 2023: 1
- 2024: 1
- 2025: 0
- 2026: 5
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elFinder MySQL has a SQL Injection in its Volume Driver (elFinderVolumeMySQL) this entry
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