CVE-2026-48843

HIGH EPSS 21.7%
Published May 25, 20261mo ago · Modified Jun 17, 20261w ago
7.2 CVSS 3.1
High
Find Similar
Published May 25, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.2
Exploitability
3.9
Impact
2.7
Vector string
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

Threat Intelligence

EPSS Exploit Probability
21.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-918 Server-Side Request Forgery (SSRF) Validation

References 5

  • github.com https://github.com/roundcube/roundcubemail/commit/ab96c88bfd888866ec5e02190b19618db283923a
  • github.com https://github.com/roundcube/roundcubemail/commit/cb3fc9041e91640ba9ba49ee7b2147c176ebf5a1
  • github.com https://github.com/roundcube/roundcubemail/releases/tag/1.6.16
  • github.com https://github.com/roundcube/roundcubemail/releases/tag/1.7.1
  • roundcube.net https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.