High severity7.2NVD Advisory· Published Jul 14, 2026· Updated Jul 20, 2026
CVE-2026-62643
CVE-2026-62643
Description
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.
Affected products
2- Range: <1.6.17, <1.7.2
Patches
Vulnerability mechanics
References
5- github.com/roundcube/roundcubemail/commit/294c7da6e7284166f040cef8607b677d459e0786nvdPatch
- github.com/roundcube/roundcubemail/commit/6d69e094d55d3a9a84dfb36edf6ca985311f0c1cnvdPatch
- roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2nvdVendor Advisory
- github.com/roundcube/roundcubemail/releases/tag/1.6.17nvdRelease Notes
- github.com/roundcube/roundcubemail/releases/tag/1.7.2nvdRelease Notes
News mentions
1- Roundcube Webmail: Four Vulnerabilities Disclosed, Ranging from DoS to Account TakeoverVypr Intelligence · Jul 15, 2026