CVE-2026-100830High· 8.1▾ TwilightMitigation bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 44.6 · likelihood 0 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 30.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.2%
— → 8.1
none → high
Last analysed / modified upstream
Mitigation bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
firefox < 153.4.0firefox >= 154.0.0, < 157.0.0thunderbird < 153.4.0thunderbird >= 154.0, < 157.0Upgrade past the affected range:
firefox 157.0.0thunderbird 157.0Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-100803High· 8.1Same-origin policy bypass in the WebExtensions component
CVE-2025-14331Medium· 6.5Same-origin policy bypass in the Request Handling component
CVE-2025-14333High· 8.1Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, Firefox 145 and Thunderbird 145
CVE-2025-14328High· 8.8Privilege escalation in the Netmonitor component
CVE-2025-14329High· 8.8Privilege escalation in the Netmonitor component
CVE-2025-14330Critical· 9.8JIT miscompilation in the JavaScript Engine: JIT component