CVE-2020-6809

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

When a Web Extension had the all-urls permission and made a fetch request with a mode set to 'same-origin', it was possible for the Web Extension to read local files. This vulnerability affects Firefox < 74.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected software

No affected versions have been published.

Timeline

Published
Mar 25, 2020
Last modified
Jun 17, 2026
NVD status
Modified

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