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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-23885 Detail

Description

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()`.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/AlchemyCMS/alchemy_cms/commit/55d03ec600fd9e07faae1138b923790028917d26 GitHub, Inc.
https://github.com/AlchemyCMS/alchemy_cms/commit/563c4ce45bf5813b7823bf3403ca1fc32cb769e7 GitHub, Inc.
https://github.com/AlchemyCMS/alchemy_cms/releases/tag/v7.4.12 GitHub, Inc.
https://github.com/AlchemyCMS/alchemy_cms/releases/tag/v8.0.3 GitHub, Inc.
https://github.com/AlchemyCMS/alchemy_cms/security/advisories/GHSA-2762-657x-v979 GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection') GitHub, Inc.  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-23885
NVD Published Date:
01/19/2026
NVD Last Modified:
01/21/2026
Source:
GitHub, Inc.