ITSECURITYWHAT HAPPENED · DOES IT AFFECT YOU · WHAT TO DO
BoardVulnerabilities › CVE-2026-16371
8.8High CVE-2026-16371 Mozilla

Privilege escalation in the DOM: Navigation component.

Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, Thunderbird 140.13, Firefox ESR 140.15, and Thunderbird 140.15.

What happened

Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, Thunderbird 140.13, Firefox ESR 140.15, and Thunderbird 140.15.

Does it affect you

Not enough information

No products recorded, so this cannot be matched against anything.

What to do

  • Follow the vendor advisory for the fixed release and any interim mitigation.
    mozilla.org
  • Follow the vendor advisory for the fixed release and any interim mitigation.
    mozilla.org
  • Follow the vendor advisory for the fixed release and any interim mitigation.
    mozilla.org
  • Follow the vendor advisory for the fixed release and any interim mitigation.
    mozilla.org

Vendor's affected list

firefox
Everything below 140.13.0

Sources

A verdict here is derived from what you told us and what the vendor published. It is not an assessment of your environment. Why we never say you are safe.