Bug 2438813

Summary:	CVE-2026-26079 roundcubemail: Roundcube Webmail: Cascading Style Sheets (CSS) injection via mishandled comments [fedora-43]
Product:	[Fedora] Fedora	Reporter:	Sandipan Roy <saroy>
Component:	roundcubemail	Assignee:	Remi Collet <fedora>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	43	CC:	anon.amish, fedora, kevin, mhlavink, tm
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["7ac0dcfa-a470-485a-9dd0-3141c7f4bb3c"]}
Fixed In Version:	roundcubemail-1.6.13-1.fc43	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-02-20 00:52:21 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:	2438807

Description Sandipan Roy 2026-02-11 06:31:20 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 Fedora Update System 2026-02-11 07:08:11 UTC

FEDORA-2026-547e298156 (roundcubemail-1.6.13-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-547e298156

Comment 2 Fedora Update System 2026-02-12 01:31:36 UTC

FEDORA-2026-547e298156 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-547e298156`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-547e298156

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

Comment 3 Fedora Update System 2026-02-20 00:52:21 UTC

FEDORA-2026-547e298156 (roundcubemail-1.6.13-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.