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CVE-2026-62643 Details

Description

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. NOTE: this issue exists because of insufficient fixes for CVE-2026-35540 and CVE-2026-48843.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:10 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

CNA: [email protected]CVSS-B:7.2 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/roundcube/roundcubemail/commit/294c7da6e7284166f040cef8607b677d459e0786	[email protected]	Patch
https://github.com/roundcube/roundcubemail/commit/6d69e094d55d3a9a84dfb36edf6ca985311f0c1c	[email protected]	Patch
https://github.com/roundcube/roundcubemail/releases/tag/1.6.17	[email protected]	Release Notes
https://github.com/roundcube/roundcubemail/releases/tag/1.7.2	[email protected]	Release Notes
https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-918	Server-Side Request Forgery (SSRF)	[email protected]

Affected Products

Product	Versions
roundcube webmail	>= 1.6.0, < 1.6.17 >= 1.7.0, < 1.7.2
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
Jul 20, 2026	Initial Analysis	[email protected]
Jul 14, 2026	CVE Modified	CISA-ADP
Jul 14, 2026	New CVE Received	[email protected]