CVE-2012-4466: Ruby-Lang Ruby

Medium severity, CVSS 5.0. EPSS: 2.6% chance of exploitation in the next 30 days.

Ruby 1.8.7 before patchlevel 371, 1.9.3 before patchlevel 286, and 2.0 before revision r37068 allows context-dependent attackers to bypass safe-level restrictions and modify untainted strings via the name_err_mesg_to_str API function, which marks the string as tainted, a different vulnerability than CVE-2011-1005.

Affected products

• Ruby-Lang Ruby: version 1.8.7 only; version 1.9.3 only; version 2.0 only; version 2.0.0 only

Published 2013-04-25. Last modified 2026-06-16.