CVE-2021-43541

MEDIUM · CVSS 6.5 EPSS 1.58%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-12-08 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

CVE

CVE-2021-43541

Severity

MEDIUM

CVSS

6.5

EPSS

1.58%

Firefox

Original NVD Description

When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was not properly escaped. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.