AlchemyCMS: Authenticated Remote Code Execution (RCE) via eval injection in ResourcesHelper

Summary A vulnerability was discovered during a manual security audit of the AlchemyCMS source code. The application uses the Ruby eval function to dynamically execute a string provided by the resourcehandler.enginename attribute in Alchemy::ResourcesHelperresourceurlproxy. Details The...

CVE-2026-23885

Alchemy is an open source content management system engine written in Ruby on Rails. Prior to versions 7.4.12 and 8.0.3, the application uses the Ruby eval function to dynamically execute a string provided by the resourcehandler.enginename attribute in Alchemy::ResourcesHelperresourceurlproxy. Th...

Eval Injection

Overview Affected versions of this package are vulnerable to Eval Injection via the resourceurlproxy function. An attacker can execute arbitrary system commands by supplying crafted input to the enginename attribute, which is evaluated within the application context. PoC require 'ostruct' def...

EUVD-2026-3281

Alchemy is an open source content management system engine written in Ruby on Rails. Prior to versions 7.4.12 and 8.0.3, the application uses the Ruby eval function to dynamically execute a string provided by the resourcehandler.enginename attribute in Alchemy::ResourcesHelperresourceurlproxy. Th...

CVE-2026-23885 AlchemyCMS has Authenticated Remote Code Execution (RCE) via eval injection in ResourcesHelper

Alchemy is an open source content management system engine written in Ruby on Rails. Prior to versions 7.4.12 and 8.0.3, the application uses the Ruby eval function to dynamically execute a string provided by the resourcehandler.enginename attribute in Alchemy::ResourcesHelperresourceurlproxy. Th...

CVE-2026-23885

Alchemy is an open source content management system engine written in Ruby on Rails. Prior to versions 7.4.12 and 8.0.3, the application uses the Ruby eval function to dynamically execute a string provided by the resourcehandler.enginename attribute in Alchemy::ResourcesHelperresourceurlproxy. Th...

Alchemy CMS 6.0.0 Arbitrary File Upload

Exploit Title: AlchemyCMS 2.x to 6.0.0 - Unrestricted File Upload authenticated Date: 01/10/2021 Exploit Author: Abdulrahman https://twitter.com/infosec90 Vendor Homepage: https://alchemy-cms.com Software Link: https://github.com/AlchemyCMS/alchemycms Version: from 2.0 to 6.0.0 Tested on: Linux...

Alchemy CMS 6.0.0 Arbitrary File Upload Vulnerability

Exploit Title: AlchemyCMS 2.x to 6.0.0 - Unrestricted File Upload authenticated Exploit Author: Abdulrahman https://twitter.com/infosec90 Vendor Homepage: https://alchemy-cms.com Software Link: https://github.com/AlchemyCMS/alchemycms Version: from 2.0 to 6.0.0 Tested on: Linux ruby 2.6.8p205 rai...

AlchemyCMS Cross-Site Scripting Vulnerability

Alchemy CMS is an open source content management system CMS written in the Rails language. A cross-site scripting vulnerability exists in AlchemyCMS version 4.1.0. A remote attacker can inject arbitrary web script or HTML by sending an image field via the /admin/pictures page...