CVE-2026-16382
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk35th percentile - higher than 35% of all known CVEs
Summary
A vulnerability in the DOM: Service Workers component in Firefox and Thunderbird allows bypassing security mitigations. This was fixed in Firefox 153 and Thunderbird 153.
Risk Assessment
An attacker could exploit this vulnerability to bypass Service Worker security measures, potentially leading to unauthorized network traffic interception or script execution in the context of other sites.
Recommendation
Update Firefox to version 153 or later and Thunderbird to version 153 or later.
Other vulnerabilities in Firefox
See all- CVE-2026-92079Unknown
Mitigation bypass in the Widget: Win32 component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
- CVE-2026-92078Unknown
Denial-of-service in the Security component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
- CVE-2026-92077Unknown
Denial-of-service in the SVG component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
- CVE-2026-92076Unknown
Incorrect boundary conditions in the Networking component of Firefox and Thunderbird. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
- CVE-2026-92075Unknown
Mitigation bypass in the Networking component of Firefox and Thunderbird. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
- CVE-2026-92074Unknown
Mitigation bypass in the Popup Blocker component of Firefox and Thunderbird. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
- CVE-2026-92073High
A privilege escalation vulnerability in the Enterprise Policies component of Firefox and Thunderbird. It was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156. It could allow an attacker to gain higher privileges on the system.
- CVE-2026-92072Unknown
Incorrect boundary conditions in the Safe Browsing component of Firefox and Thunderbird. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
- CVE-2026-92071Unknown
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component of Firefox and Thunderbird. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
- CVE-2026-92070Unknown
Information disclosure in the Networking component of Firefox and Thunderbird. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
Original NVD description (English source)
Mitigation bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.