CVE-2012-4466: Ruby 1.8.7 before patchlevel 371, 1.9.3 before patchlevel 286, and 2.0 before revision r37068 allows contex...

Security readout for executives and security teams

CVE-2012-4466 is a Ruby safe-level restriction bypass. In affected Ruby versions, certain internal string handling could let a context-dependent attacker modify strings that should remain protected. Business urgency is mainly for legacy systems that still run old Ruby or rely on Ruby safe-level sandboxing. Exposure is most likely in legacy Ruby runtime environments, older Linux distribution packages, or applications that execute untrusted Ruby code and depend on safe-level behavior. Modern systems not running these Ruby versions are unlikely to be affected based on the supplied sources. Prioritize remediation where legacy Ruby handles untrusted code or provides sandbox-like isolation. For ordinary internal systems, urgency is lower but still worth addressing because the affected Ruby branches are obsolete and may carry additional unpatched risk. Mitigation focus: Upgrade Ruby beyond the affected patchlevels or revision identified by upstream Ruby.; Apply fixed packages from the operating system vendor where Ruby is distribution-managed.; Retire unsupported Ruby 1.8.7, 1.9.3, or early 2.0 runtimes where possible..

Prepared

Jun 14, 2026, 22:07 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.