CVE-2008-3443: Ruby-Lang Ruby

Medium severity, CVSS 5.0. EPSS: 15.7% chance of exploitation in the next 30 days.

The regular expression engine (regex.c) in Ruby 1.8.5 and earlier, 1.8.6 through 1.8.6-p286, 1.8.7 through 1.8.7-p71, and 1.9 through r18423 allows remote attackers to cause a denial of service (infinite loop and crash) via multiple long requests to a Ruby socket, related to memory allocation failure, and as demonstrated against Webrick.

Affected products

• Ruby-Lang Ruby: version 1.6.8 only; version 1.8.0 only; version 1.8.1 only; version 1.8.2 only; version 1.8.3 only; version 1.8.4 only; …

Published 2008-08-14. Last modified 2026-06-16.