AUGUST 4, 2026
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Case File

CVE-2020-26973

HIGH · CVSS 8.8 EPSS 1.54%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-01-07 · Last synced 2026-08-04

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CVE
CVE-2020-26973
Severity
HIGH
CVSS
8.8
EPSS
1.54%
Firefox

Original NVD Description

Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been used as a sanitizer bypass. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.

Related CVEs

Other vulnerabilities affecting the same vendor(s)