BaseFortify

Publication date: 2025-09-17

Last updated on: 2025-10-08

Assigner: Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government

Description

CISA Thorium does not adequately validate the paths of downloaded files via 'download_ephemeral' and 'download_children'. A remote, authenticated attacker could access arbitrary files subject to file system permissions. Fixed in 1.1.2.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-09-17

Last Modified

2025-10-08

Generated

2026-07-26

AI Q&A

2025-09-17

EPSS Evaluated

2026-07-25

NVD

CVE-2025-35430

Affected Vendors & Products

Vendor	Product	Version / Range
cisa	thorium	From 1.0.0 (inc) to 1.1.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-22	The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Attack-Flow Graph

Executive Summary

This vulnerability in CISA Thorium occurs because the software does not properly validate the paths of files downloaded using the 'download_ephemeral' and 'download_children' functions. This flaw allows a remote, authenticated attacker to access arbitrary files on the system, limited only by the file system permissions.

Impact Analysis

The vulnerability can allow an attacker with valid authentication to access arbitrary files on the affected system. This could lead to unauthorized disclosure of sensitive information or data leakage, depending on the permissions of the files accessed.

Mitigation Strategies

Update CISA Thorium to version 1.1.2 or later, where the vulnerability is fixed.

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