Bug 2468495 (CVE-2026-42245) - CVE-2026-42245 ruby: net-imap: Net::IMAP: Denial of Service via crafted IMAP responses
Summary: CVE-2026-42245 ruby: net-imap: Net::IMAP: Denial of Service via crafted IMAP ...
Keywords:
Status: NEW
Alias: CVE-2026-42245
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2484324
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-09 20:01 UTC by OSIDB Bzimport
Modified: 2026-06-30 18:13 UTC (History)
12 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:33515 0 None None None 2026-06-30 16:11:25 UTC
Red Hat Product Errata RHSA-2026:33540 0 None None None 2026-06-30 15:28:36 UTC
Red Hat Product Errata RHSA-2026:33565 0 None None None 2026-06-30 16:05:46 UTC
Red Hat Product Errata RHSA-2026:33576 0 None None None 2026-06-30 17:12:37 UTC
Red Hat Product Errata RHSA-2026:33577 0 None None None 2026-06-30 18:13:32 UTC

Description OSIDB Bzimport 2026-05-09 20:01:15 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, Net::IMAP::ResponseReader has quadratic time complexity when reading large responses containing many string literals. A hostile server can send responses which are crafted to exhaust the client's CPU for a denial of service attack. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4.
Comment 2 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 3 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 4 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 5 errata-xmlrpc 2026-06-30 17:12:35 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 6 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
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