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This issue does not show for Special:BlankPage. Any page with a file (image): Attribute srcset not allowed on element img at this point. This is allowed per the HTML Living Standard. srcset allows the MediaWiki software to render alternate images based on the device capabilities. The W3C HTML validator has not yet been updated to support this ...
As the JavaScript code was also processing user input and rendering it in the web page content, a new sub-class of reflected XSS attacks started to appear that was called DOM-based cross-site scripting. In a DOM-based XSS attack, the malicious data does not touch the web server.
Mapping between HTML5 and JavaScript features and Content Security Policy controls. If the Content-Security-Policy header is present in the server response, a compliant client enforces the declarative allowlist policy. One example goal of a policy is a stricter execution mode for JavaScript in order to prevent certain cross-site scripting attacks.
The same-origin policy applies only to scripts. This means that resources such as images, CSS, and dynamically loaded scripts can be accessed across origins via the corresponding HTML tags (with fonts being a notable exception). Attacks take advantage of the fact that the same origin policy does not apply to HTML tags.
When required, or when re-blocking without talk page editing allowed is unsuccessful, protection should be implemented for only a brief period not exceeding the duration of the block. In addition, administrators may apply indefinite semi-protection to pages that are subject to heavy and persistent vandalism or violations of content policy (such ...
Unblock yahoo.com in any antivirus software, which may have built-in ad blocker; Disable ad blocker on the home Internet router. Refer to the manufacturer's instruction manual; Check all the icons in the browser navigation bar for a possible ad blocker, and disable/remove them
XMLHttpRequest data is subject to this security policy, but sometimes web developers want to intentionally circumvent its restrictions. This is sometimes due to the legitimate use of subdomains as, for example, making an XMLHttpRequest from a page created by foo.example.com for information from bar.example.com will normally fail.
One of Bomis's servers hosted all Wikipedia wikis; English and meta running on the php/mysql-based new software, all other languages on UseModWiki. Runs both the database and the web server on one machine. Phase IIIa: July 2002 – May 2003. Wikipedia gets own server, running English Wikipedia and after a bit meta, with rewritten PHP software.