CVE-2026-62643

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.

CVSS v3 7.2 HIGH

7.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/roundcube/roundcubemail/commit/294c7da6e7284166f040cef8607b677d459e0786	Patch
https://github.com/roundcube/roundcubemail/commit/6d69e094d55d3a9a84dfb36edf6ca985311f0c1c	Patch
https://github.com/roundcube/roundcubemail/releases/tag/1.6.17	Release Notes
https://github.com/roundcube/roundcubemail/releases/tag/1.7.2	Release Notes
https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:roundcube:webmail::::::::
	cpe:2.3:a:roundcube:webmail::::::::

History

24 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) En Roundcube Webmail anterior a 1.6.17 y 1.7.x anterior a 1.7.2, una sanitización insuficiente de las Hojas de Estilo en Cascada (CSS) en mensajes de correo electrónico HTML puede conducir a SSRF o revelación de información, por ejemplo, si los enlaces de las hojas de estilo apuntan a hosts de la red local. NOTA: este problema existe debido a correcciones insuficientes para CVE-2026-35540 y CVE-2026-48843.

Information

Published : 2026-07-14 16:17

Updated : 2026-10-24 21:10

NVD link : CVE-2026-62643

Mitre link : CVE-2026-62643

CVE.ORG link : CVE-2026-62643

JSON object : View

Products Affected

roundcube

webmail

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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