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Information Exposure Affecting firefox-esr package, versions <60.3.0esr-1

Severity

 Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.37% (29th percentile)

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  • Snyk IDSNYK-ECHOLATEST-FIREFOXESR-18169156
  • published22 Jul 2026
  • disclosed28 Feb 2019
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Introduced: 28 Feb 2019

CVE-2018-12397  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Echo:latest firefox-esr to version 60.3.0esr-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-esr package and not the firefox-esr package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.