CVE-2013-1821: Ruby-Lang Ruby

Medium severity, CVSS 5.0. EPSS: 6.9% chance of exploitation in the next 30 days.

lib/rexml/text.rb in the REXML parser in Ruby before 1.9.3-p392 allows remote attackers to cause a denial of service (memory consumption and crash) via crafted text nodes in an XML document, aka an XML Entity Expansion (XEE) attack.

Affected products

• Ruby-Lang Ruby: up to and including 1.9.3; version 1.9 only; version 1.9.1 only; version 1.9.2 only; version 1.9.3 only; version 2.0 only; …

Published 2013-04-09. Last modified 2026-06-16.