Reliance on Cookies without Validation and Integrity Checking Affecting ruby3.4-default-gems package, versions <0:3.4.8-31.1.hum1


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
2.93% (86th percentile)

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  • Snyk IDSNYK-RHEL10-RUBY34DEFAULTGEMS-16119729
  • published22 Apr 2026
  • disclosed24 Nov 2021

Introduced: 24 Nov 2021

CVE-2021-41819  (opens in a new tab)
CWE-565  (opens in a new tab)

How to fix?

Upgrade RHEL:10 ruby3.4-default-gems to version 0:3.4.8-31.1.hum1 or higher.
This issue was patched in RHSA-2026:7307.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby3.4-default-gems package and not the ruby3.4-default-gems package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

CGI::Cookie.parse in Ruby through 2.6.8 mishandles security prefixes in cookie names. This also affects the CGI gem through 0.3.0 for Ruby.

CVSS Base Scores

version 3.1