Mozilla released security updates to mitigate local file stealing via PDF reader

The vulnerability comes from the interaction of the mechanism that enforces JavaScript context separation (the “same origin policy”) and Firefox’s PDF Viewer. Mozilla products that don’t contain the PDF Viewer, such as Firefox for Android, are not vulnerable.

Read more here - https://support.mozilla.org/en-US/kb/update-firefox-latest-version

Update Firefox to the latest version - https://support.mozilla.org/en-US/kb/update-firefox-latest-version

George Chetcuti

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George Chetcuti

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