Bug 2558892

Summary:	CVE-2026-114716 roundcubemail: roundcubemail: Mail header injection via unvalidated inline image media type [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Lukas Javorsky <ljavorsk>
Component:	roundcubemail	Assignee:	Remi Collet <fedora>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	rawhide	CC:	anon.amish, fedora, kevin, mhlavink, tm
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["7762750a-9edd-4dba-b93a-369823a3b533"]}
Fixed In Version:	roundcubemail-1.7.5-1.fc45 roundcubemail-1.7.5-1.fc44	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-11-05 01:00:37 UTC	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:
Bug Blocks:	2558658

Description Lukas Javorsky 2026-10-22 11:26:26 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.

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability. rcmail_sendmail::extract_inline_images() used the media type taken from an inline image data URI without validating it, so a remote authenticated attacker could inject arbitrary MIME part headers into the outgoing message by placing CRLF sequences in that media type. Upstream fixed this in the commit “Fix mail header injection via media type in an inline image data URI”, which validates the media type with rcube_mime::is_mimetype_valid().

Comment 1 Fedora Update System 2026-10-27 05:36:38 UTC

FEDORA-2026-2aba9ce8fc (roundcubemail-1.7.5-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-2aba9ce8fc

Comment 2 Fedora Update System 2026-10-28 03:45:33 UTC

FEDORA-2026-7002464a52 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-7002464a52`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-7002464a52

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 3 Fedora Update System 2026-10-28 04:01:54 UTC

FEDORA-2026-2aba9ce8fc has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-2aba9ce8fc`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-2aba9ce8fc

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2026-11-05 01:00:37 UTC

FEDORA-2026-7002464a52 (roundcubemail-1.7.5-1.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 5 Fedora Update System 2026-11-05 01:24:59 UTC

FEDORA-2026-2aba9ce8fc (roundcubemail-1.7.5-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.