CVE-2011-1491: The login form in Roundcube Webmail before 0.5.1 does not properly handle a correctly authenticated but uni...

Security readout for executives and security teams

CVE-2011-1491 is an old Roundcube Webmail login CSRF issue affecting versions before 0.5.1. A remote authenticated attacker could cause a victim to enter the attacker's account context and disclose sensitive information while composing email. Business urgency is highest for organizations still running very old Roundcube deployments. Exposure is most likely on legacy, internet-accessible Roundcube Webmail installations older than 0.5.1. The source bundle does not provide CPEs, package names, default configurations, or evidence that supported current versions are affected. Treat this as a legacy exposure cleanup item unless old Roundcube is still internet-facing. If present, prioritize upgrade or retirement because webmail often contains sensitive business communications. Mitigation focus: Upgrade Roundcube Webmail to 0.5.1 or later if any pre-0.5.1 instance remains.; Check Roundcube changelog and vendor guidance for supported upgrade paths from legacy releases.; Retire or isolate unsupported Roundcube deployments until they can be upgraded..

Prepared

Jun 24, 2026, 13:28 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.