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.

Is your site exposed to CVE-2025-51661?

Run a free security scan — no signup, results in seconds.

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.

Related Vulnerabilities

CVE-2025-59342

esm.sh is a nobuild content delivery network(CDN) for modern web development. In 136 and earlier, a path-traversal flaw in the …

CVE-2026-34151

XWiki Platform is a generic wiki platform. Prior to 17.10.5 and 18.2.0, the /skin/ action in com.xpn.xwiki.web.SkinAction can resolve double-encoded …

CVE-2026-46687

Emlog is an open source website building system. In 2.6.13 and earlier, the article publishing interface stores a path-traversal template …

CVE-2026-49103

Webmin before 2.640 does not safely construct a filename for saving of an attachment within the mailboxes component. This occurs …

CVE-2025-61318 9.1

Emlog Pro 2.5.20 has an arbitrary file deletion vulnerability. This vulnerability stems from the admin/template.php component and the admin/plugin.php component. …

CVE-2023-6699 9.1

The WP Compress – Image Optimizer [All-In-One] plugin for WordPress is vulnerable to Directory Traversal in all versions up to, …

CVE-2025-51661