The package 'a1408nw-Ounennhei' version 2.1.3 in the RubyGems ecosystem is confirmed to contain malicious code as reported by the OpenSSF malicious packages repository. This is a supply chain threat where the package itself is malicious, potentially leading to compromise if used. No further technical details or exploitation methods are described in the source data.

Use of the malicious package version 2.1.3 may lead to compromise of systems or data depending on the malicious payload embedded in the package. Since the package is explicitly identified as malicious, any deployment or inclusion in projects can introduce security risks. No known active exploitation has been reported.

Avoid using the affected version 2.1.3 of the 'a1408nw-Ounennhei' RubyGem. Remove or replace this package with a trusted alternative. Since no patch or fixed version is indicated, the best mitigation is to not use this package version. Monitor official RubyGems advisories or the OpenSSF repository for updates or removals.