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Mozilla Foundation Security Advisory 2015-115

Cross-origin restriction bypass using Fetch

Announced
October 15, 2015
Reporter
Abdulrahman Alqabandi
Impact
High
Products
Firefox
Fixed in
  • Firefox 41.0.2

Description

Security researcher Abdulrahman Alqabandi reported that the fetch() API did not correctly implement the Cross-Origin Resource Sharing (CORS) specification, allowing a malicious page to access private data from other origins. Mozilla developer Ben Kelly independently reported the same issue.

References