The strong_password gem 0.0.7 for Ruby, as distributed on RubyGems.org, included a code-execution backdoor inserted by a third party. The current version, without this backdoor, is 0.0.6.
https://withatwist.dev/strong-password-rubygem-hijacked.html
https://rubygems.org/gems/strong_password/versions
https://github.com/bdmac/strong_password/releases
https://benjamin-bouchet.com/blog/vulnerabilite-dans-la-gem-strong_password-0-0-7/
Source: Mitre, NVD
Published: 2019-07-08
Updated: 2026-06-17
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS: 0.00728