CVE-2026-48843

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 Reserved 2026-05-25 | Published 2026-05-25 | Updated 2026-05-26 | Assigner mitre

Problem types

CWE-918 Server-Side Request Forgery (SSRF)

Product status

References

roundcube.net/...026/05/24/security-updates-1.6.16-and-1.7.1

github.com/roundcube/roundcubemail/releases/tag/1.7.1

github.com/...ommit/ab96c88bfd888866ec5e02190b19618db283923a

github.com/roundcube/roundcubemail/releases/tag/1.6.16

github.com/...ommit/cb3fc9041e91640ba9ba49ee7b2147c176ebf5a1

cve.org (CVE-2026-48843)

nvd.nist.gov (CVE-2026-48843)

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