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CVE-2026-114726 Details

Description

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability in the Bounce (resend) action. rcube_mime::decode_address_list() did not strip control characters from the decoded display name, so a received message whose From display-name carries CRLF sequences in an encoded word could inject arbitrary headers into the message emitted when the user bounces it. Upstream fixed this in the commit “Fix mail header injection via the From display-name in the Bounce (resend) action”.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.8 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://bugs.debian.org/1151279	[email protected]	Third Party AdvisoryMailing List
https://github.com/roundcube/roundcubemail/commit/3a136465c965776a5f636587187626985dae4f3b	[email protected]	Patch
https://github.com/roundcube/roundcubemail/commit/d3a35545fdaf72b02a9a4d670064895488e9d9d0	[email protected]	Patch
https://github.com/roundcube/roundcubemail/releases/tag/1.6.20	[email protected]	Release Notes
https://github.com/roundcube/roundcubemail/releases/tag/1.7.5	[email protected]	Release Notes
https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5	[email protected]	Issue Tracking

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-99	Improper Control of Resource Identifiers ('Resource Injection')	[email protected]

Affected Products

Product	Versions
roundcube webmail	>= 1.6.0, < 1.6.20 >= 1.7.0, < 1.7.5
CPE cpe:2.3:a:roundcube:webmail:::::::: Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Oct 29, 2026	Initial Analysis	[email protected]
Oct 28, 2026	CVE Modified	CISA-ADP
Oct 22, 2026	New CVE Received	[email protected]