CRLF Injection Affecting ruby:2.5/rubygems package, versions <0:2.7.6.3-112.module+el8.8.0+24452+e70e99ef


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.81% (53rd 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-RHEL8-RUBY-17793006
  • published2 Jul 2026
  • disclosed9 May 2026

Introduced: 9 May 2026

CVE-2026-42258  (opens in a new tab)
CWE-93  (opens in a new tab)

How to fix?

Upgrade RHEL:8 ruby:2.5/rubygems to version 0:2.7.6.3-112.module+el8.8.0+24452+e70e99ef or higher.
This issue was patched in RHSA-2026:34076.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby:2.5/rubygems package and not the ruby:2.5/rubygems package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, symbol arguments to commands are vulnerable to a CRLF Injection / IMAP Command injection via Symbol arguments passed to IMAP commands. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4.

CVSS Base Scores

version 3.1