In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, 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. This issue exists because of insufficient fixes for CVE-2026-35540, CVE-2026-48843 and CVE-2026-62643.
History

Mon, 17 Aug 2026 15:15:00 +0000

Type Values Removed Values Added
Title Insufficient CSS Sanitization in Roundcube Webmail Enables SSRF and Information Disclosure

Mon, 17 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 17 Aug 2026 13:15:00 +0000

Type Values Removed Values Added
Description In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, 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. This issue exists because of insufficient fixes for CVE-2026-35540, CVE-2026-48843 and CVE-2026-62643.
First Time appeared Roundcube
Roundcube webmail
Weaknesses CWE-918
CPEs cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
Vendors & Products Roundcube
Roundcube webmail
References
Metrics cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-08-17T14:06:46.947Z

Reserved: 2026-08-17T12:56:46.553Z

Link: CVE-2026-75006

cve-icon Vulnrichment

Updated: 2026-08-17T14:06:42.463Z

cve-icon NVD

Status : Received

Published: 2026-08-17T13:16:55.240

Modified: 2026-08-17T14:20:22.273

Link: CVE-2026-75006

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-17T17:00:04Z