CVE-2025-35430

Name: CVE-2025-35430
Creator: NVD / NIST
Published: 2025-09-17T17:15:43.1+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.46%

Last modified Jun 17, 2026

CVE-2025-35430 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

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

CVSS 4.0

5.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.46%

36.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Cisa	Thorium	>= 1.0.0, < 1.1.2

References

https://github.com/cisagov/thorium/blob/main/api/src/utils/bounder.rs#L120-L158Product
https://github.com/cisagov/thorium/releases/tag/1.1.2Release Notes
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-259-01.jsonVendor Advisory
https://www.cve.org/CVERecord?id=CVE-2025-35430Third Party Advisory

Timeline

Published: Sep 17, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-35430?

How severe is CVE-2025-35430?

CVE-2025-35430 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.

How do I fix CVE-2025-35430?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-35430?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST