Tag
cross-origin
Safeguard articles tagged "cross-origin" — guides, analysis, and best practices for software supply chain and application security.
2 articles
Application Security
postMessage Has No Default Access Control
Your embeddable widget talks to the page hosting it across origins. Anything that can get a reference to that window can send it a message, and unless the listener checks who sent it, the widget will act on a message from anywhere.
Sep 18, 20265 min read
Security
CORS Headers Explained: How to Configure Them Without Opening Holes
CORS headers tell a browser which cross-origin requests to a resource are allowed. Get them right and you enable legitimate clients; get them wrong and you hand attackers a door.
May 6, 20265 min read
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