How widely exploitable is this vulnerability?

Exploitation is limited to users who can authenticate to Brave CMS and access the CKEditor upload functionality, but within that scope it can be highly impactful because it may lead to remote code execution on the server.

Does an attacker need administrative privileges to exploit this?

Not necessarily. Any authenticated account with permission to use CKEditor's upload feature could potentially exploit the flaw if no further role-based restrictions are in place. The critical requirement is access to the vulnerable upload endpoint, not admin-level capabilities.

What is the safest general fix pattern?

The most robust fix is to implement strict server-side validation that only permits a narrow set of safe, non-executable file types, store them in non-executable directories, and prevent user control over final file names and execution paths. Combine this with server configuration that disallows script execution in upload locations.

Severity:

HIGH RISK

(8.8)

Unrestricted File Upload (CWE-434) in Brave CMS CKEditor Upload Controller

CVE-2026-35164

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:

Unrestricted File Upload

CWE:

CWE-434

Impact:

Remote Code Execution by uploading and executing server-side scripts

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Unrestricted File Upload

CWE:

CWE-434

Impact:

Remote Code Execution by uploading and executing server-side scripts

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Unrestricted File Upload (CWE-434) in Brave CMS CKEditor Upload Controller

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

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