CVEvulnerability
CVE-2021-23814
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-12-17
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.7 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:L
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 6.5 MEDIUM — AV:N/AC:L/Au:S/C:P/I:P/A:P
- Weaknesses
- CWE-434, CWE-94
Description
This affects versions of the package unisharp/laravel-filemanager before 2.6.2. The upload() function does not sufficiently validate the file type when uploading.
An attacker may be able to reproduce the following steps:
1. Install a package with a web Laravel application.
2. Navigate to the Upload window
3. Upload an image file, then capture the request
4. Edit the request contents with a malicious file (webshell)
5. Enter the path of file uploaded on URL - Remote Code Execution
**Note:** Prevention for bad extensions can be done by using a whitelist in the config file(lfm.php). Corresponding document can be found in here.
Affected configurations
• unisharp laravel-filemanager (>= 0.0.0)
Related
References
- https://github.com/UniSharp/laravel-filemanager/blob/master/src/Controllers/UploadController.php%23L26 Broken Link, Third Party Advisory
- https://github.com/UniSharp/laravel-filemanager/issues/1113 github.com
- https://github.com/UniSharp/laravel-filemanager/releases/tag/v2.5.1 github.com
- https://github.com/UniSharp/laravel-filemanager/releases/tag/v2.6.2 github.com
- https://security.snyk.io/vuln/SNYK-PHP-UNISHARPLARAVELFILEMANAGER-1567199 security.snyk.io
- https://github.com/UniSharp/laravel-filemanager/blob/master/src/Controllers/UploadController.php%23L26 Broken Link, Third Party Advisory
- https://github.com/UniSharp/laravel-filemanager/issues/1113#issuecomment-1812092975 github.com
- https://snyk.io/vuln/SNYK-PHP-UNISHARPLARAVELFILEMANAGER-1567199 Third Party Advisory