CVE-2026-62643
HIGH severity · CVSS 7.2 · Server-side request forgery (SSRF)
7.2CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactLow
Integrity impactLow
Availability impactNone
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://github.com/roundcube/roundcubemail/commit/294c7da6e7284166f040cef8607b677d459e0786 ↗
Additional information
- NVD record
- https://github.com/roundcube/roundcubemail/commit/294c7da6e7284166f040cef8607b677d459e0786Patch
- https://github.com/roundcube/roundcubemail/commit/6d69e094d55d3a9a84dfb36edf6ca985311f0c1cPatch
- https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2Advisory
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.17
- https://github.com/roundcube/roundcubemail/releases/tag/1.7.2