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Case File

CVE-2020-26967

MEDIUM · CVSS 6.5 EPSS 0.84%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2020-12-09 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.5. It affects Firefox.

CVE
CVE-2020-26967
Severity
MEDIUM
CVSS
6.5
EPSS
0.84%
Firefox

Original NVD Description

When listening for page changes with a Mutation Observer, a malicious web page could confuse Firefox Screenshots into interacting with elements other than those that it injected into the page. This would lead to internal errors and unexpected behavior in the Screenshots code. This vulnerability affects Firefox < 83.

Related CVEs

Other vulnerabilities affecting the same vendor(s)