CVE-2026-48843
CVSS Score
7.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-918 |
| Vendor | roundcube |
| Product | webmail |
| Published | May 25, 2026 |
| Last Updated | May 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
Roundcube / Webmail
1.6.14 < 1.6.16 1.7.0 < 1.7.1
References
roundcube.net: https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1 github.com: https://github.com/roundcube/roundcubemail/releases/tag/1.7.1 github.com: https://github.com/roundcube/roundcubemail/commit/ab96c88bfd888866ec5e02190b19618db283923a github.com: https://github.com/roundcube/roundcubemail/releases/tag/1.6.16 github.com: https://github.com/roundcube/roundcubemail/commit/cb3fc9041e91640ba9ba49ee7b2147c176ebf5a1