CVE-2008-4199: Opera before 9.52 does not prevent use of links from web pages to feed source files on the local disk, whic...

Security readout for executives and security teams

This is an old Opera browser information-disclosure issue. A malicious web page could check whether certain local feed-source filenames existed on a user's disk. The known impact is file-name validity disclosure, not code execution or full file theft. The sources do not show active exploitation. Exposure is most plausible on legacy systems still using Opera before 9.52. Modern Opera installations should not be assumed affected from these sources. Asset owners should verify browser versions rather than infer exposure from product name alone. Treat this as low business urgency unless legacy Opera remains in use. The main risk is privacy-sensitive filename discovery on obsolete browser installations, with no source evidence of active exploitation or severe compromise. Mitigation focus: Upgrade affected Opera installations to 9.52 or later per vendor changelog guidance.; Remove or isolate unsupported legacy Opera installations where upgrade is not practical.; Restrict use of obsolete browsers on managed endpoints..

Prepared

Jun 28, 2026, 11:59 UTC (UTC+00:00)

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