CVE-2026-35164Public exploitNetwork attack vector

Authenticated code execution via unrestricted CKEditor upload

Published Apr 6, 2026 · Updated Apr 6, 2026

Unrestricted file upload in Ajax30 Brave CMS before 2.0.6 allows remote authenticated users to execute code through CKEditor uploads. The ckupload method in app/Http/Controllers/Dashboard/CkEditorController.php trusts the client-supplied extension and saves the upload in the public images/articles directory without file-type validation. Author privileges are required; a PHP script uploaded through /dashboard/ckupload executes with the web server's privileges when its returned URL is requested.

CVSS severity8.8
High
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Ajax30 Brave CMS before 2.0.6 allows remote authenticated users to execute code through CKEditor uploads. The ckupload method in app/Http/Controllers/Dashboard/CkEditorController.php trusts the client-supplied extension and saves the upload in the public images/articles directory without file-type validation. Author privileges are required; a PHP script uploaded through /dashboard/ckupload executes with the web server's privileges when its returned URL is requested.

The record

CVE
CVE-2026-35164
Published
Apr 6, 2026
Updated
Apr 6, 2026
Vendor
Ajax30
Product
Brave CMS
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.0.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ajax30 · Brave CMSversion=< 2.0.6

Published CVSS scores

8.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Server Software Component: Web Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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