How exploitable is this vulnerability in practice?

If the upload endpoint is reachable and the server has write access beyond the upload directory, exploitation can be straightforward—an attacker only needs to craft multipart requests with malicious path components. The overall impact depends on what files or directories are writable and how those files are later used.

What level of access does an attacker need to exploit this?

An attacker needs the ability to send POST multipart/form-data requests to the goshs instance. Whether this is internet-accessible or internal-only depends on how the service is deployed; no local shell access is required.

What is the safest general fix pattern?

The robust fix is to decouple file paths from user input: enforce a fixed server-side upload root, generate filenames on the server, canonicalize all paths, and verify that the final resolved path never escapes the designated directory before performing any filesystem operations.

Severity:

CRITICAL RISK

(9.8)

Path Traversal (CWE-22) in goshs Multipart File Upload Handling

CVE-2026-35393

Published:

Apr 6, 2026

Status:

Received

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Path Traversal

CWE:

CWE-22

Impact:

Arbitrary File Write via Directory Traversal

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.0

Vulnerability Type

Category:

Path Traversal

CWE:

CWE-22

Impact:

Arbitrary File Write via Directory Traversal

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.0

Catch This CVE While Code Is Being Written

Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.

Get Started

Ship clean & secure code faster

START 14 DAYS FREE TRIAL

BOOK A DEMO

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Path Traversal (CWE-22) in goshs Multipart File Upload Handling

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare