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.
Published: 2019-02-28
Score: 7.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-1571-1 firefox-esr security update
Debian DSA Debian DSA DSA-4324-1 firefox-esr security update
EUVD EUVD EUVD-2018-4371 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.
Ubuntu USN Ubuntu USN USN-3801-1 Firefox vulnerabilities
History

Tue, 25 Nov 2025 18:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Vendors & Products Mozilla firefox Esr

Subscriptions

Canonical Ubuntu Linux
Debian Debian Linux
Mozilla Firefox
Redhat Enterprise Linux Enterprise Linux Desktop Enterprise Linux Server Enterprise Linux Server Eus Enterprise Linux Workstation
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2024-08-05T08:30:59.851Z

Reserved: 2018-06-14T00:00:00.000Z

Link: CVE-2018-12397

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-02-28T18:29:00.883

Modified: 2025-11-25T17:50:16.803

Link: CVE-2018-12397

cve-icon Redhat

Severity : Moderate

Publid Date: 2018-10-23T00:00:00Z

Links: CVE-2018-12397 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses