CVE-2013-2065: (1) DL and (2) Fiddle in Ruby 1.9 before 1.9.3 patchlevel 426, and 2.0 before 2.0.0 patchlevel 195, do not...

Security readout for executives and security teams

This is an old Ruby runtime sandbox-bypass issue. In affected Ruby 1.9 and 2.0 releases, DL and Fiddle did not enforce taint checks for native functions, so code constrained by $SAFE could bypass intended restrictions. Business urgency depends on whether legacy Ruby is still present and used to run untrusted or semi-trusted code. Likely exposure is limited to legacy Ruby deployments, especially applications or automation that rely on $SAFE tainting to restrict untrusted Ruby code. Modern applications not using affected Ruby versions or not relying on DL, Fiddle, or $SAFE-style isolation are less likely exposed. Treat this as a legacy-runtime risk rather than an internet-wide emergency. Prioritize discovery and remediation where Ruby 1.9 or early Ruby 2.0 supports security-sensitive automation, customer-facing applications, or untrusted script execution. Mitigation focus: Upgrade Ruby 1.9 to at least 1.9.3 patchlevel 426.; Upgrade Ruby 2.0 to at least 2.0.0 patchlevel 195.; Apply vendor-patched Ruby packages from Fedora, Ubuntu, or openSUSE where applicable..

Prepared

Jun 14, 2026, 15:13 UTC (UTC+00:00)

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