CVE-2026-84140

Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2...

CVE-2026-84138

CVE-2026-84138 is a denial-of-service vulnerability in the PDF Viewer component of Firefox (Mozilla). The root cause is not specified in the provided documents. The vulnerability was fixed in Firefox 155 , as confirmed by the Mozilla Security Advisory (MFSA2026-82) and the associated Bugzilla rep...

CVE-2026-84126

CVE-2026-84126 is a vulnerability in the Layout: Grid component of Firefox , caused by incorrect boundary conditions . The flaw allows a network-based attack with low complexity and no required privileges , but user interaction is required (e.g., visiting a crafted page). The impact is limited to...