Threats Tagged 'cve-2026-16382'

A critical security update for Mozilla Firefox Extended Support Release (ESR) 153.1.0 addresses multiple vulnerabilities across components such as graphics, JavaScript engine, DOM, and networking. The issues include use-after-free, privilege escalation, information disclosure, mitigation bypasses, same-origin policy bypass, integer overflow, race conditions, and denial-of-service. These vulnerabilities affect Firefox ESR 153.1.0 and related branding and translation packages.

CVE-2026-16349 is a critical vulnerability in Mozilla Firefox involving a same-origin policy bypass in the DOM Navigation component. This flaw allows unauthorized access across origins, violating web security boundaries. The issue was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13. The vulnerability has a CVSS score of 9.8, indicating high impact on confidentiality, integrity, and availability. No known exploits in the wild have been reported. Users should update to the fixed versions to mitigate the risk.

CVE-2026-16382 is a mitigation bypass vulnerability in the DOM Service Workers component of Mozilla Firefox. It affects Firefox versions prior to 153 and was fixed in Firefox 153. The vulnerability has a critical CVSS score of 9.8, indicating high impact on confidentiality, integrity, and availability. The vendor advisory confirms the fix is included in Firefox 153. No known exploits in the wild have been reported. This issue is part of a broader set of security fixes released in Firefox 153 and Thunderbird 153.