Bug 2468498 (CVE-2026-42258)

Summary: CVE-2026-42258 ruby/net-imap: ruby: Net::IMAP: IMAP Command Injection via Symbol Arguments
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: akostadi, amasferr, dmayorov, eshamard, jkoehler, jlledo, jvasik, kaycoth, lphiri, pantinor, rblanco, rhel-process-autobot, sdawley, tsedmik, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in Net::IMAP, a Ruby library that provides Internet Message Access Protocol (IMAP) client functionality. This vulnerability allows a remote attacker to inject arbitrary IMAP commands. This is achieved by passing specially crafted symbol arguments to IMAP commands. Successful exploitation could lead to unauthorized actions on the IMAP server or client, potentially resulting in information disclosure or other integrity impacts.
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2487319    
Bug Blocks:    

Description OSIDB Bzimport 2026-05-09 20:01:24 UTC
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.

Comment 3 errata-xmlrpc 2026-06-30 10:49:28 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:33462 https://access.redhat.com/errata/RHSA-2026:33462

Comment 4 errata-xmlrpc 2026-06-30 15:26:34 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:33514 https://access.redhat.com/errata/RHSA-2026:33514

Comment 5 errata-xmlrpc 2026-06-30 15:28:35 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:33540 https://access.redhat.com/errata/RHSA-2026:33540

Comment 6 errata-xmlrpc 2026-06-30 15:35:55 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:33512 https://access.redhat.com/errata/RHSA-2026:33512

Comment 7 errata-xmlrpc 2026-06-30 16:05:44 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:33565 https://access.redhat.com/errata/RHSA-2026:33565

Comment 8 errata-xmlrpc 2026-06-30 16:11:23 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:33515 https://access.redhat.com/errata/RHSA-2026:33515

Comment 9 errata-xmlrpc 2026-06-30 17:07:45 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:33630 https://access.redhat.com/errata/RHSA-2026:33630

Comment 10 errata-xmlrpc 2026-06-30 17:12:36 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:33576 https://access.redhat.com/errata/RHSA-2026:33576

Comment 11 errata-xmlrpc 2026-06-30 18:13:31 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:33577 https://access.redhat.com/errata/RHSA-2026:33577

Comment 12 errata-xmlrpc 2026-07-01 08:17:06 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:34076 https://access.redhat.com/errata/RHSA-2026:34076

Comment 13 errata-xmlrpc 2026-07-06 03:42:11 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:35834 https://access.redhat.com/errata/RHSA-2026:35834

Comment 14 errata-xmlrpc 2026-07-06 06:35:27 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:35866 https://access.redhat.com/errata/RHSA-2026:35866

Comment 15 errata-xmlrpc 2026-07-06 06:38:52 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:35867 https://access.redhat.com/errata/RHSA-2026:35867

Comment 16 errata-xmlrpc 2026-07-06 13:57:58 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:35895 https://access.redhat.com/errata/RHSA-2026:35895

Comment 17 errata-xmlrpc 2026-07-07 06:47:55 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:36099 https://access.redhat.com/errata/RHSA-2026:36099

Comment 18 errata-xmlrpc 2026-07-09 11:19:44 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:37238 https://access.redhat.com/errata/RHSA-2026:37238

Comment 19 errata-xmlrpc 2026-07-09 17:34:15 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:37397 https://access.redhat.com/errata/RHSA-2026:37397