Roundcube Pre-Auth SQL Injection Flaw Actively Exploited in the Wild

[Starburst-David]

The Canadian Centre for Cyber Security has warned that a now-patched Roundcube Webmail vulnerability is being actively exploited in the wild.

The vulnerability in question is CVE-2026-48842 (CVSS score: 8.1), a pre-authentication SQL injection in the virtuser_query plugin of Roundcube Webmail versions 1.6.x before 1.6.16 and 1.7.x before 1.7.1.

The issue stems from a preg_replace() backslash escape bypass that allows attackers to inject arbitrary SQL statements without authentication.

More Information:
https://thehackernews.com/2026/09/round ... -flaw.html

Published Date: Sep 25, 2026

Vulnerabilities has been mentioned in this article:
CVE-2026-48842 CVE-2025-68461 CVE-2025-49113