Improper Input Validation Affecting ruby4.0-default-gems package, versions <0:4.0.0-33.3.hum1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
6.67% (94th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-RHEL10-RUBY40DEFAULTGEMS-16114782
  • published21 Apr 2026
  • disclosed22 Feb 2013

Introduced: 22 Feb 2013

CVE-2013-1821  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade RHEL:10 ruby4.0-default-gems to version 0:4.0.0-33.3.hum1 or higher.
This issue was patched in RHSA-2026:8838.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby4.0-default-gems package and not the ruby4.0-default-gems package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

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.

References

CVSS Base Scores

version 3.1