How severe is CVE-2025-51661?

CVE-2025-51661 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-51661 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-51661?

CVE-2025-51661 affects Lanol Filecodebox. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-51661?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-51661 have an EU (EUVD) identifier?

Yes. CVE-2025-51661 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198168.

When was CVE-2025-51661 published?

CVE-2025-51661 was published on 2025-11-19 and last updated on 2026-06-17.

CVE-2025-51661

CVE-2025-51661 is a high-severity vulnerability in Lanol Filecodebox with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-24.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-198168
Weakness: CWE-24
Affected product: Lanol Filecodebox
Published: 2025-11-19
Last modified: 2026-06-17

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.

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.
How severe is CVE-2025-51661?: CVE-2025-51661 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-51661 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-51661?: CVE-2025-51661 affects Lanol Filecodebox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-51661?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-51661 have an EU (EUVD) identifier?: Yes. CVE-2025-51661 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198168.
When was CVE-2025-51661 published?: CVE-2025-51661 was published on 2025-11-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:lanol:filecodebox:*:*:*:*:*:*:*:*

More vulnerabilities in Lanol Filecodebox

CVE-2025-51663 — High (CVSS 7.5): A vulnerability found in IPRateLimit implementation of FileCodeBox up to 2.2 allows remote attackers to bypass ip-based…
CVE-2025-51662 — Medium (CVSS 5.4): A stored cross-site scripting (XSS) vulnerability is found in the text sharing feature of FileCodeBox version 2.2 and…
CVE-2024-34525 — Medium (CVSS 5.3): FileCodeBox 2.0 stores a OneDrive password and AWS key in a cleartext env file.

All CVEs affecting Lanol Filecodebox →

Other CWE-24 vulnerabilities

CVE-2026-39813 — Critical (CVSS 9.8): A path traversal: '../filedir' vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through…
CVE-2026-49103 — Critical (CVSS 9.4): Webmin before 2.640 does not safely construct a filename for saving of an attachment within the mailboxes component.…
CVE-2025-61318 — Critical (CVSS 9.1): Emlog Pro 2.5.20 has an arbitrary file deletion vulnerability. This vulnerability stems from the admin/template.php…
CVE-2023-6699 — Critical (CVSS 9.1): The WP Compress – Image Optimizer [All-In-One] plugin for WordPress is vulnerable to Directory Traversal in all…
CVE-2025-54769 — High (CVSS 8.8): An authenticated, read-only user can upload a file and perform a directory traversal to have the uploaded file placed…
CVE-2025-60344 — High (CVSS 8.6): A path traversal (directory traversal) vulnerability in D-Link DSR series routers allows unauthenticated remote…

Browse all CWE-24 vulnerabilities →