CVE-2025-51661: filecodebox — Exploit

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.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness Type (CWE)

CWE-24 CWE-24

Affected Products

Vendor	Product	Versions
lanol	filecodebox	< 2.2

References

Exploits

https://github.com/vastsa/FileCodeBox/issues/349

Other References

https://github.com/vastsa/FileCodeBox

Frequently Asked Questions

What is CVE-2025-51661? +

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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-51661? +

CVE-2025-51661 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-51661? +

CVE-2025-51661 affects products from lanol, specifically: filecodebox. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-51661? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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