Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-16381

Same-origin policy bypass in the Networking: DNS component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 7.0%
CVSS Severity
CVSS v3 Score 9.1
Products affected by CVE-2026-16381


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