CVE-2025-51662: filecodebox XSS — Exploit

Description

A stored cross-site scripting (XSS) vulnerability is found in the text sharing feature of FileCodeBox version 2.2 and earlier. Insufficient input validation allows attackers to inject arbitrary JavaScript code into shared text "codeboxes". The xss payload is automatically executed in the browsers of any users who try to access the infected codebox by clicking link or entering share code.

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CVSS v3.1 Score

5.4

MEDIUM

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
lanol	filecodebox	< 2.2

References

Exploits

https://github.com/vastsa/FileCodeBox/issues/351 https://github.com/vastsa/FileCodeBox/issues/351

Other References

https://github.com/vastsa/FileCodeBox

Frequently Asked Questions

What is CVE-2025-51662? +

A stored cross-site scripting (XSS) vulnerability is found in the text sharing feature of FileCodeBox version 2.2 and earlier. Insufficient input validation allows attackers to inject arbitrary JavaScript code into shared text "codeboxes". The xss payload is automatically executed in the browsers of any users who try to access the infected codebox by clicking link or entering share code. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2025-51662? +

CVE-2025-51662 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-51662? +

CVE-2025-51662 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-2025-51662? +

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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CVE-2025-51662