CVE-2026-62643

EUVD-2026-43749
In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, 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. NOTE: this issue exists because of insufficient fixes for CVE-2026-35540 and CVE-2026-48843.
SSRF
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
mitreCNA
7.2 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
roundcubewebmail
1.6.0 ≤
𝑥
< 1.6.17
CNA
roundcubewebmail
1.7.0 ≤
𝑥
< 1.7.2
CNA
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://github.com/roundcube/roundcubemail/commit/294c7da6e7284166f040cef8607b677d459e0786
https://github.com/roundcube/roundcubemail/commit/6d69e094d55d3a9a84dfb36edf6ca985311f0c1c
https://github.com/roundcube/roundcubemail/releases/tag/1.6.17
https://github.com/roundcube/roundcubemail/releases/tag/1.7.2
https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2