Описание
Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Same-origin policy bypass in the DOM: Navigation component
Отчет
Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Меры по смягчению последствий
--- CME Mitigation Guidance (2026-11-02) --- Disclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure. The highest-value action is to enforce strict same-origin policy validation within the DOM: Navigation component to block cross-origin DOM access: upgrade to Firefox 159, Firefox ESR 153.6, and Thunderbird 159 (or the corresponding fixed Red Hat builds), which enforces origin checks during DOM navigation to prevent cross-origin policy bypasses, closing all 2 injection vectors (crafted web page navigation, cross-origin DOM manipulation). Until patched, this is a concern on All platforms running vulnerable Firefox or Thunderbird web-rendering contexts, so Restrict users from following untrusted links or visiting untrusted websites until the browser is updated. These controls limit blast radius and contain exploitation, but they do not fix the underlying same-origin policy bypass — apply the upstream patch to fully remediate.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | firefox | Affected | ||
| Red Hat Enterprise Linux 10 | rhel10/firefox-flatpak | Affected | ||
| Red Hat Enterprise Linux 10 | rhel10/thunderbird-flatpak | Affected | ||
| Red Hat Enterprise Linux 10 | thunderbird | Affected | ||
| Red Hat Enterprise Linux 6 | firefox | Out of support scope | ||
| Red Hat Enterprise Linux 6 | thunderbird | Out of support scope | ||
| Red Hat Enterprise Linux 7 | firefox | Affected | ||
| Red Hat Enterprise Linux 7 | thunderbird | Out of support scope | ||
| Red Hat Enterprise Linux 8 | firefox | Affected | ||
| Red Hat Enterprise Linux 8 | thunderbird | Affected |
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Дополнительная информация
Статус:
7.5 High
CVSS3
Связанные уязвимости
Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
Same-origin policy bypass in the DOM: Navigation component. This vulne ...
Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.
7.5 High
CVSS3