CVE-2020-12409

HighCVSS 8.8/10Last 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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected software

No affected versions have been published.

Timeline

Published
Jul 9, 2020
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2020

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CVE-2020-12409: High severity, CVSS 8.8 | Vulnix