CRLF Injection Affecting ruby-bundled-gems package, versions <0:3.3.12-8.module+el8.10.0+24567+c4e5368e


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.49% (39th percentile)

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  • Snyk IDSNYK-CENTOS8-RUBYBUNDLEDGEMS-17937840
  • published10 Jul 2026
  • disclosed22 Jun 2026

Introduced: 22 Jun 2026

CVE-2026-47240  (opens in a new tab)
CWE-93  (opens in a new tab)

How to fix?

Upgrade Centos:8 ruby-bundled-gems to version 0:3.3.12-8.module+el8.10.0+24567+c4e5368e or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby-bundled-gems package and not the ruby-bundled-gems package as distributed by Centos. See How to fix? for Centos:8 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 data" argument that is sent verbatim after validation to prevent command injection. However, if a server does not support non-synchronizing literals, it may still be possible to inject arbitrary IMAP commands inside non-synchronizing literals. A server without support for non-synchronizing literals may interpret the "+}\r\n" as the end of a malformed command line and respond with a tagged BAD. In that case, the contents of the literal will be interpreted as one or more new pipelined commands, allowing a CRLF command injection attack to succeed. This affects criteria for #search and #uid_search; search_keys for #sort, #thread, #uid_sort, and #uid_thread; and attr for #fetch and #uid_fetch. This vulnerability is fixed in 0.6.5 and 0.5.15.

CVSS Base Scores

version 3.1