CVE-2011-3956: The extension implementation in Google Chrome before 17.0.963.46 does not properly handle sandboxed origins...

Security readout for executives and security teams

CVE-2011-3956 is an old Google Chrome flaw where extension handling could mishandle sandboxed origins. In practical terms, a maliciously crafted extension might break browser isolation rules meant to keep one site or origin from accessing another. Exposure is most likely limited to legacy systems running Google Chrome before 17.0.963.46, especially where browser extensions can be installed or are not centrally controlled. Treat this as a legacy hygiene issue unless obsolete Chrome exists in production, labs, kiosks, or unmanaged endpoints. The business priority is eliminating unsupported browser versions rather than emergency incident response. Mitigation focus: Update Chrome to 17.0.963.46 or later where any legacy installations remain.; Remove or replace unsupported legacy Chrome versions from managed endpoints.; Restrict extension installation through enterprise browser policy where feasible..

Prepared

Jun 27, 2026, 17:28 UTC (UTC+00:00)

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