CVE-2025-51661 Path traversal in n/a

High 7.5 Published Updated

Remote attackers can write arbitrary files outside the intended directory via path traversal in the file upload endpoint when local storage is enabled.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2025-51661?

CVE-2025-51661 is a high-severity path traversal vulnerability in n/a, published on 19 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A path Traversal vulnerability found in FileCodeBox v2.2 and earlier allows arbitrary file writes when application is configured to use local filesystem storage. SystemFileStorage.save_file method in core/storage.py uses filenames from user input without validation to construct save_path and save files. This allows remote attackers to perform arbitrary file writes outside the intended directory by sending crafted POST requests with malicious traversal sequences to /share/file/ upload endpoint, which does not require any authorization.

Weakness: CWE-24

Which versions are affected by CVE-2025-51661?

It affects 1 product.

Products include Lanol Filecodebox.

How do I fix CVE-2025-51661?

No fix has been published for CVE-2025-51661 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2025-51661 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-51661 exists.

Sources

Also known as GHSA-xpx4-57h5-9v98.

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