CVE-2018-12397

HighCVSS 7.1/10Last modified Jun 17, 2026

Description

A WebExtension can request access to local files without the warning prompt stating that the extension will "Access your data for all websites" being displayed to the user. This allows extensions to run content scripts in local pages without permission warnings when a local file is opened. This vulnerability affects Firefox ESR < 60.3 and Firefox < 63.

Metrics

CVSS 3.0 7.1/10CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-200

Affected software

No affected versions have been published.

Timeline

Published: Feb 28, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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