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2 vulnerabilities by alchemy-cms
CVE-2026-23885 (GCVE-0-2026-23885)
Vulnerability from cvelistv5 – Published: 2026-01-19 21:09 – Updated: 2026-01-21 21:12
VLAI
Title
AlchemyCMS has Authenticated Remote Code Execution (RCE) via eval injection in ResourcesHelper
Summary
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 `resource_handler.engine_name` attribute in `Alchemy::ResourcesHelper#resource_url_proxy`. The vulnerability exists in `app/helpers/alchemy/resources_helper.rb` at line 28. The code explicitly bypasses security linting with `# rubocop:disable Security/Eval`, indicating that the use of a dangerous function was known but not properly mitigated. Since `engine_name` is sourced from module definitions that can be influenced by administrative configurations, it allows an authenticated attacker to escape the Ruby sandbox and execute arbitrary system commands on the host OS. Versions 7.4.12 and 8.0.3 fix the issue by replacing `eval()` with `send()`.
Severity
6.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-95 - Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/AlchemyCMS/alchemy_cms/securit… | x_refsource_CONFIRM |
| https://github.com/AlchemyCMS/alchemy_cms/commit/… | x_refsource_MISC |
| https://github.com/AlchemyCMS/alchemy_cms/commit/… | x_refsource_MISC |
| https://github.com/AlchemyCMS/alchemy_cms/release… | x_refsource_MISC |
| https://github.com/AlchemyCMS/alchemy_cms/release… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AlchemyCMS | alchemy_cms |
Affected:
< 7.4.12
Affected: >= 8.0.0.a, < 8.0.3 |
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CVE-2018-18307 (GCVE-0-2018-18307)
Vulnerability from cvelistv5 – Published: 2018-10-16 00:00 – Updated: 2025-08-29 15:03 Disputed
VLAI
Summary
A Stored XSS vulnerability has been discovered in version 4.1.0 of AlchemyCMS via the /admin/pictures image field. NOTE: the vendor's position is that this is not a valid report: "The researcher used an authorized cookie to perform the request to a password-protected route. Without that session cookie, the request would have been rejected as unauthorized."
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
Date Public
2018-10-14 00:00
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