Roundcube's Forgotten Plugin: A Four-Month-Old SQL Injection Is Now Running in the Wild
Roundcube Webmail's virtuser_query plugin carries CVE-2026-48842, a pre-authentication SQL injection that was patched back in May 2026. On September 24, Canada's Cyber Centre confirmed attackers are exploiting it in the wild, and any unpatched webmail server is an open door into the database behind it.