CVE-2004-2659: Opera offers an Open button to verify that a user wishes to execute a downloaded file, which allows user-as...

Security readout for executives and security teams

This old Opera browser issue concerns a timing trick around the download Open confirmation. A malicious site could try to make a user click Open unintentionally by showing another interaction immediately before the dialog appears. The evidence does not identify affected versions, a patch, or active exploitation. Likely exposure is limited to legacy Opera deployments that still allow downloaded files to be opened directly from browser prompts. The source bundle lists vendor and product metadata as n/a, so exact affected versions cannot be confirmed from the provided evidence. Treat as a legacy-software hygiene issue unless active legacy Opera use exists. Prioritize inventory and retirement over emergency response, because the sources show user interaction requirements and no active exploitation signal. Mitigation focus: Inventory and retire unsupported Opera installations where feasible.; Check Opera or vendor archives for version-specific guidance or fixes.; Disable or restrict direct execution of downloaded files where policy allows..

Prepared

Jun 29, 2026, 12:56 UTC (UTC+00:00)

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