Description
Roundcube Webmail 1.6.x between 1.6.14 and 1.6.16,and 1.7.x before 1.7.1 has 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. The issue stems from an insufficient fix for CVE-2026-35540.
Published: 2026-05-25
Score: 7.2 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4604-1 roundcube security update
Debian DSA Debian DSA DSA-6301-1 roundcube security update
History

Tue, 26 May 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Mon, 25 May 2026 20:45:00 +0000

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

Mon, 25 May 2026 19:45:00 +0000

Type Values Removed Values Added
Description Roundcube Webmail 1.6.x between 1.6.14 and 1.6.16,and 1.7.x before 1.7.1 has 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. The issue stems from an insufficient fix for CVE-2026-35540.
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': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'}


Subscriptions

Roundcube Webmail
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-05-26T12:50:42.557Z

Reserved: 2026-05-25T19:11:03.274Z

Link: CVE-2026-48843

cve-icon Vulnrichment

Updated: 2026-05-26T12:50:36.919Z

cve-icon NVD

Status : Deferred

Published: 2026-05-25T20:16:36.767

Modified: 2026-06-17T10:55:17.000

Link: CVE-2026-48843

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-25T20:30:26Z

Weaknesses