Unpatched RCE: Livewire Filemanager Upload Flaw (CVE-2025-14894) Exposes Laravel Apps

A critical new security flaw has been unearthed in Livewire Filemanager, a popular tool used within the Laravel PHP framework, potentially leaving web applications wide open to unauthenticated remote code execution (RCE). Tracked as CVE-2025-14894, the vulnerability carries a CVSS score of 7.5, highlighting the significant risk it poses to developers and organizations using the component for file management.

The core of the issue lies in how the file manager handles incoming data. According to a security advisory from CERT/CC, the component fails to adequately scrutinize what users are uploading.

“LivewireFilemanager Component.php… does not perform file type and MIME validation, allowing for RCE through upload of a malicious php file”.

In a standard attack scenario, a threat actor can upload a malicious PHP script disguised as a benign file. Because the application does not validate the file type, it accepts the upload. If the server is configured to serve these files publicly—specifically if the common php artisan storage:link command has been executed—the attacker can simply navigate to the file’s URL to trigger it.

“This enables an attacker to create a malicious PHP file, upload it to the application, then force the application to execute it, enabling unauthenticated arbitrary code execution on the host device.”

What makes this vulnerability particularly insidious is that it exploits a “commonly performed setup process” within Laravel environments. The vulnerability note points out that while the developers of Livewire Filemanager consider file validation to be “out of scope” and the responsibility of the user, the default behavior combined with standard Laravel configurations creates a direct path to compromise.

The impact of a successful exploit is severe. An attacker gains the ability to execute arbitrary code as the web server user.

“The vulnerability enables unauthenticated remote code execution as the web server user, enabling full read and write of files accessible to that user, as well as the capability to further pivot and compromise connecting devices”.

As of the release of the advisory, there is no official patch available. The report notes a concerning lack of response from the tool’s creators: “At the time of writing, the vendor has not acknowledged the vulnerability.”

Until a formal fix is released, security teams are advised to take immediate defensive action. CERT/CC recommends that administrators verify if their applications are serving storage files publicly.

“CERT/CC recommends using increased caution with Laravel Filemanager, and to check if the php artisan storage:link command has previously been executed, and if so, consider removing the web serving capability of the tool.”

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