CVE-2018-5105

—

CVSS 3.0

7.8 high

EPSS

<1%p36

Published

Jun 11, 2018 (Jun 11, 2018)

Modified

Jun 17, 2026

Description

WebExtensions can bypass user prompts to first save and then open an arbitrarily downloaded file. This can result in an executable file running with local user privileges without explicit user consent. This vulnerability affects Firefox < 58.

Vendors: mozilla canonical
Products: firefox, ubuntu linux
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.4%)

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