CVE-2026-35164: Brave CMS Sffected by Unrestricted File Upload via CKEditor Endpoint

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-04-06 · updated 2026-10-24
Weakness: CWE-434

Description

Brave CMS is an open-source CMS. Prior to 2.0.6, an unrestricted file upload vulnerability exists in the CKEditor upload functionality. It is found in app/Http/Controllers/Dashboard/CkEditorController.php within the ckupload method. The method fails to validate uploaded file types and relies entirely on user input. This allows an authenticated user to upload executable PHP scripts and gain Remote Code Execution. This vulnerability is fixed in 2.0.6.

Affected products

Ajax30 BraveCMS-2.0: from 2.0.0 before 2.0.6 — fixed in 2.0.6

How to fix

Upgrade to a fixed version: Ajax30 BraveCMS-2.0 2.0.6. Check the vendor advisory for mitigations.

References

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