CVE-2008-3790: Ruby-Lang Ruby

Medium severity, CVSS 5.0. EPSS: 15.2% chance of exploitation in the next 30 days.

The REXML module in Ruby 1.8.6 through 1.8.6-p287, 1.8.7 through 1.8.7-p72, and 1.9 allows context-dependent attackers to cause a denial of service (CPU consumption) via an XML document with recursively nested entities, aka an "XML entity explosion."

Affected products

• Ruby-Lang Ruby: version 1.8.6 only; version 1.8.7 only; version 1.9 only

Published 2008-08-27. Last modified 2026-06-16.