CVE-2026-75006CWE-918ssrf

CVE-2026-75006

Medium · published August 17, 2026

CVSS v3.1
5.8
EPSS
0%
Percentile
34.8
In the wild
Unconfirmed
What it is

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, 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. This issue exists because of insufficient fixes for CVE-2026-35540, CVE-2026-48843 and CVE-2026-62643.

The record
Technical detail
CVSS v3.1
5.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00416 · 34.8th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-08-17T17:16Z
Affected products (2)
ProductVersionsFixed in
roundcube/webmail≥ 1.6.0, < 1.6.181.6.18
roundcube/webmail≥ 1.7.0, < 1.7.31.7.3
References (7)
https://github.com/roundcube/roundcubemail/commit/7e10ca0110b7c9aa1b7850b843bb6625e47bbe00 · [email protected]https://github.com/roundcube/roundcubemail/commit/8a92380b06b5df1481e034c4f40d6a6546c21223 · [email protected]https://github.com/roundcube/roundcubemail/commit/92f85c883594e5be757154f94548a9ba903455c9 · [email protected]https://github.com/roundcube/roundcubemail/commit/c111b72950cd2bf57d6b86cd129568d90403322d · [email protected]https://github.com/roundcube/roundcubemail/releases/tag/1.6.18 · [email protected]https://github.com/roundcube/roundcubemail/releases/tag/1.7.3 · [email protected]https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3 · [email protected]
EPSS history
Timeline
  • 17 AUG 12:56Z
    In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or…
    cvelistv5