CVE-2026-48843
High
Description
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.
SeverityHigh
CVSS7.2
Exploit probability—
Product
Webmail
PublishedMay 25, 2026
First seenMay 25, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Update
- Roundcube Webmail1.6.16, 1.7.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Roundcube Webmail | 1.6.14 ≤ v < 1.6.16, 1.7.0 ≤ v < 1.7.1 | 1.6.16, 1.7.1 |
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