Arbitrary Argument Injection Affecting ruby3.4-default-gems package, versions <0:3.4.8-31.3.hum1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.24% (15th percentile)

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  • Snyk IDSNYK-RHEL10-RUBY34DEFAULTGEMS-17814478
  • published4 Jul 2026
  • disclosed22 Jun 2026

Introduced: 22 Jun 2026

NewCVE-2026-47241  (opens in a new tab)
CWE-88  (opens in a new tab)

How to fix?

Upgrade RHEL:10 ruby3.4-default-gems to version 0:3.4.8-31.3.hum1 or higher.
This issue was patched in RHSA-2026:34293.

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.

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a raw string argument which is only validated to prevent CRLF injection and then sent verbatim. If this string is derived from user-controlled input, an attacker can force the next command to be absorbed as a continuation of the first command. This will cause the first command to eventually fail, but also prevents it from returning until another command is sent (from another thread). That other command will not return until the connection is closed. This vulnerability is fixed in 0.6.5 and 0.5.15.

CVSS Base Scores

version 3.1