Bug 2484324

Summary:	CVE-2026-42245 ruby: Net::IMAP: Denial of Service via crafted IMAP responses [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Vipul Nair <vinair>
Component:	ruby	Assignee:	Vít Ondruch <vondruch>
Status:	NEW ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	jaruga, jprokop, mtasaka, pvalena, ruby-packagers-sig, vondruch
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["313bc2e2-cfe3-484b-a369-b9d088d2910d"]}
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Clone Of:		Environment:
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Regression:	---	Mount Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2468495

Description Vipul Nair 2026-06-03 10:41:57 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Comment 1 Jun Aruga 2026-06-10 10:12:29 UTC

The detail of CVE-2026-42245 is below.
https://github.com/ruby/net-imap/security/advisories/GHSA-q2mw-fvj9-vvcw

The net-imap gem version is 0.6.2 in the latest Ruby version 4.0.5. The fixed version of net-imap is 0.6.4. So, the CVE still affects Rubies on Fedora.