Bug 2558797

Summary:	CVE-2026-114722 roundcubemail: Roundcube Webmail: Interface spoofing via CSS scoping bypass in HTML messages [epel-all]
Product:	[Fedora] Fedora EPEL	Reporter:	Laura Pardo <lpardo>
Component:	roundcubemail	Assignee:	Orphan Owner <extras-orphan>
Status:	ON_QA ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	epel10	CC:	anon.amish, extras-orphan, fedora, kevin, mhlavink, tm
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["fa2a89d2-26d5-4e01-ac01-8fae04e5d4ec"]}
Fixed In Version:		Doc Type:	---
Doc Text:		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:
Bug Blocks:	2558720

Description Laura Pardo 2026-10-22 09:31:41 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 CSS scoping bypass in HTML messages. rcube_utils::mod_css_styles() did not treat an at-rule prologue such as @layer a; as a selector boundary, and did not handle selectors beginning with ::, so selectors following an at-rule were left unscoped and applied to the whole Roundcube interface instead of being confined to the message body. This allows an HTML message to restyle application chrome for UI redressing and spoofing. Upstream fixed this in the commit “Fix CSS scoping bypass in HTML messages using at-rules”.

Comment 1 Fedora Update System 2026-10-27 05:56:27 UTC

FEDORA-EPEL-2026-6c045f4364 (roundcubemail-1.6.20-1.el10_4) has been submitted as an update to Fedora EPEL 10.4.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-6c045f4364

Comment 2 Fedora Update System 2026-10-28 02:58:38 UTC

FEDORA-EPEL-2026-6c045f4364 has been pushed to the Fedora EPEL 10.4 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-6c045f4364

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 03:18:28 UTC

FEDORA-2026-db7e033531 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-db7e033531`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-db7e033531

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

Comment 4 Fedora Update System 2026-10-28 03:29:41 UTC

FEDORA-EPEL-2026-7597dbe701 has been pushed to the Fedora EPEL 10.3 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-7597dbe701

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

Comment 5 Fedora Update System 2026-10-28 03:39:39 UTC

FEDORA-EPEL-2026-7012a089ec has been pushed to the Fedora EPEL 10.2 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-7012a089ec

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