CVE-2026-8962: Mitigation bypass in the DOM: Security component
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-8962?
CVE-2026-8962 is considered a high severity vulnerability due to its potential to bypass security mitigations in the DOM.
How do I fix CVE-2026-8962?
To fix CVE-2026-8962, update to Firefox version 151, Firefox ESR version 140.11, Thunderbird version 151, or Thunderbird ESR version 140.11.
What products are affected by CVE-2026-8962?
CVE-2026-8962 affects Mozilla Firefox, Firefox ESR, Thunderbird, and Thunderbird ESR versions prior to the specified fixed versions.
What type of vulnerability is CVE-2026-8962?
CVE-2026-8962 is categorized as a mitigation bypass vulnerability related to the security component in the Document Object Model (DOM).
Is CVE-2026-8962 present in older versions of Firefox and Thunderbird?
Yes, CVE-2026-8962 is present in older versions of Firefox and Thunderbird before the remedied versions mentioned.