7.5

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2025-8021

CVE-2025-8021: files-bucket-server vulnerable to Directory Traversal

All versions of the package files-bucket-server are vulnerable to Directory Traversal where an attacker can traverse the file system and access files outside of the intended directory.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2025-8021

CVE-2025-8021:

7.5

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
files-bucket-server	npm	<= 1.2.6

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The analysis of the 'files-bucket-server' package confirms a critical path traversal vulnerability. The primary source of this vulnerability is located in the file deletion functionality within the setupServerAPI method in index.js. The reference gist provided a clear pointer to the vulnerable code block, which was then verified by inspecting the source code of the index.js file from the repository. The route handler for DELETE /api/files/:filename takes the filename parameter directly from the user request and joins it with the base workspace path without any sanitization. This allows an attacker to craft a malicious path using ../ sequences to traverse the file system and delete files outside of the designated workspace, leading to a high-severity security risk.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

Vulnerability Intelligence
Miggo AI

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WAF Protection Rules

WAF Rule

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Reasoning

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