CVE-2004-2704: Hastymail 1.0.1 and earlier (stable) and 1.1 and earlier (development) does not send the "attachment" param...

Security readout for executives and security teams

Older Hastymail webmail versions can mishandle attachment downloads so Internet Explorer may display an attachment inside the browser instead of treating it as a file. If a user clicks a malicious attachment link, this can enable cross-site scripting and possibly related attacks in the webmail context. Exposure is most likely in legacy Hastymail deployments, especially internet-accessible webmail still used with old Internet Explorer clients. Modern environments are less likely exposed unless old Hastymail remains reachable. Treat this as a legacy webmail cleanup issue, not a current mass-exploitation emergency. Prioritize if Hastymail is internet-facing, still used for sensitive mail, or reachable by outdated browsers. Mitigation focus: Check Hastymail vendor security guidance for fixed versions or official updates.; Upgrade, retire, or isolate affected legacy Hastymail instances.; Restrict access to webmail until version and header behavior are confirmed..

Prepared

Jun 29, 2026, 02:45 UTC (UTC+00:00)

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