CVE-2026-48843
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.2epss 0.3%
exploitation probability
0.3%top 81% of all CVEs
observed exploitation
nono source reports it
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:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Affected products
Roundcube · WebmailReferences
https://github.com/roundcube/roundcubemail/commit/ab96c88bfd888866ec5e02190b19618db283923ahttps://github.com/roundcube/roundcubemail/commit/cb3fc9041e91640ba9ba49ee7b2147c176ebf5a1https://github.com/roundcube/roundcubemail/releases/tag/1.6.16https://github.com/roundcube/roundcubemail/releases/tag/1.7.1https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1