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BoardVulnerabilities › CVE-2026-16365
8.8High CVE-2026-16365 Mozilla

Privilege escalation in the DOM: Workers component.

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

What happened

Privilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 153, Thunderbird 153, 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

Vendor's affected list

firefox
Everything below 153.0.0

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.