CVE-2020-6809

high

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.

References

https://www.mozilla.org/security/advisories/mfsa2020-08/

https://bugzilla.mozilla.org/show_bug.cgi?id=1420296

Details

Source: Mitre, NVD

Published: 2020-03-25

Updated: 2021-07-21

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Severity: High