CVE Daily

CVE-2021-43540

WebExtensions with the correct permissions were able to create and install Servi...

Medium CVSS 6.5

Overview

WebExtensions with the correct permissions were able to create and install ServiceWorkers for third-party websites that would not have been uninstalled with the extension. This vulnerability affects Firefox < 95.

CWE: N/A Published: 2021-12-08T22:15:09.787
Risk analysis

This vulnerability is rated 🟡 MEDIUM.

  • CVSS: 6.5 (MEDIUM)
  • Detected tags: none (tag impact: LOW)

Recommended actions:

  • Prioritize remediation based on business criticality and exposure.
  • Limit exposure and increase monitoring until fixed.

Recommended tools

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