Name: CVE-2020-12409: Undefined Security Weakness
Creator: Rapid7
Published: 2020-07-09T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2020-12409, CVSS 8.8, EPSS 0.0033

When using certain blank characters in a URL, they where incorrectly rendered as spaces instead of an encoded URL. This vulnerability affects Firefox < 77.

CVSS Details

CVSS 3.1 Base Score: 8.8
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alpine Linux	—	Upgrade librewolfUpgrade firefox	Aug 22, 2024	Jul 9, 2020
Arch Linux	—	Upgrade to the latest version of Arch Linux	Jul 11, 2025	Jul 9, 2020
Gentoo Linux	—	Upgrade www-client/firefox.Upgrade www-client/firefox-bin.	Jun 15, 2020	Jun 13, 2020
Mfsa2020 20	—	Upgrade to Mozilla Firefox version 77.0Upgrade to the latest version of Mozilla Firefox	Jun 3, 2020	Jun 2, 2020
Ubuntu	—	Upgrade firefox	Jun 5, 2020	Jun 4, 2020

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CVSS Details

Covered by Rapid7

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