8125 2009-10-29 17:16:13 +0000 Can it be specified somewhere that script can define a variable named "top" with 'var top' in a global context? This is currently inconsistent across browsers. 2010-10-04 14:30:01 +0000 1 1 1 Unclassified HTML WG pre-LC1 HTML5 spec (editor: Ian Hickson) unspecified Other other RESOLVED WONTFIX http://www.whatwg.org/specs/web-apps/current-work/#the-window-object NE P3 normal LC 1 contributor ian ian mike public-html-admin public-html-wg-issue-tracking w3c public-html-bugzilla oldest_to_newest 29200 0 contributor 2009-10-29 17:16:13 +0000 Section: http://www.whatwg.org/specs/web-apps/current-work/#the-window-object Comment: Can it be specified somewhere that script can define a variable named "top" with 'var top' in a global context? This is currently inconsistent across browsers. Posted from: 68.146.86.203 29206 1 w3c 2009-10-29 23:46:13 +0000 Letting script define a global variable named top is a security vulnerability. It's only inconsistent because I haven't gotten around to convincing everyone of that fact yet. 30116 2 ian 2009-12-13 15:54:50 +0000 EDITOR'S RESPONSE: This is an Editor's Response to your comment. If you are satisfied with this response, please change the state of this bug to CLOSED. If you have additional information and would like the editor to reconsider, please reopen this bug. If you would like to escalate the issue to the full HTML Working Group, please add the TrackerRequest keyword to this bug, and suggest title and text for the tracker issue; or you may create a tracker issue yourself, if you are able to do so. For more details, see this document: http://dev.w3.org/html5/decision-policy/decision-policy.html Status: Rejected Change Description: no spec change Rationale: As far as I can tell, this is already well-defined (through WebIDL). Off-hand, though, I don't know if it's well-defined to allow or disallow it; you'd have to check WebIDL carefully to determine that. Adam: If WebIDL or HTML5 need to change to handle this security issue, please file a new bug stating exactly what should change.