The 'active-subset_validator' RubyGems package at version 1.0.0 has been flagged as containing malicious code by the OpenSSF malicious packages database. This is a supply chain threat involving a malicious package published to the RubyGems ecosystem. There is no detailed technical vulnerability or exploit information available, and no known exploits in the wild have been reported. No patch or remediation details are provided.

Installation or use of the malicious 'active-subset_validator' version 1.0.0 package could lead to compromise depending on the malicious code's behavior, which is not detailed here. As a malicious package, it poses a risk of arbitrary code execution or other malicious activities inherent to supply chain attacks.

Avoid using the 'active-subset_validator' package version 1.0.0. Since no patch or fixed version is indicated, users should remove this package if installed and source dependencies from trusted, verified packages. Monitor vendor or RubyGems advisories for updates or remediation guidance.