CVE-2020-12409

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CVSS 3.1

8.8 high

EPSS

1%p61

Published

Jul 9, 2020 (Jul 9, 2020)

Modified

Jun 17, 2026

Description

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

Vendors: mozilla
Products: firefox
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (1.0%)

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