CVE-2026-48843

HIGH

Roundcube Webmail - Server-Side Request Forgery (SSRF)

Title source: rule
STIX 2.1

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.

References (5)

Core 5

Scores

CVSS v3 7.2
EPSS 0.0029
EPSS Percentile 20.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-918
Status published
Products (2)
Roundcube/Webmail 1.6.14 - 1.6.16
Roundcube/Webmail 1.7.0 - 1.7.1
Published May 25, 2026
Tracked Since May 26, 2026