CISA flagged two Roundcube Webmail vulnerabilities as actively exploited in attacks and ordered U.S. federal agencies to patch them within three weeks. Roundcube Webmail is a web-based email client that has been the default mail interface for the widely used cPanel web hosting control panel since 2008. The first vulnerability tagged as actively abused by threat actors is a critical remote code execution flaw tracked as CVE-2025-49113, which was first flagged as exploited days after it was patched in June 2025, when Internet security watchdog Shadowserver warned that over 84,000 vulnerable Roundcube webmail installations were vulnerable to attacks. Roundcube patched the second one (CVE-2025-68461) two months ago, in December 2025, warning that remote, unauthenticated attackers can exploit…