CVE-2026-35047: Brave CMS has Unrestricted File Upload in BraveCMS via CKEditor Endpoint

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-06 · updated 2026-10-23
Weakness: CWE-434

Description

Brave CMS is an open-source CMS. Prior to 2.0.6, an Unrestricted File Upload vulnerability in the CKEditor endpoint allows attackers to upload arbitrary files, including executable scripts. This may lead to Remote Code Execution (RCE) on the server, potentially resulting in full system compromise, data exfiltration, or service disruption. All users running affected versions of BraveCMS are impacted. 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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