Firefox Esr CVE-2026-4686

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable

A sandbox escape vulnerability exists in Firefox's XPCOM component due to incorrect boundary conditions and integer over

Mozilla developers Andrew McCreight, Gabriele Svelto, Tom Ritter and the Mozilla Fuzzing Team reported memory safety bug

Mozilla Network Security Services (NSS) before 3.16.2.1, 3.16.x before 3.16.5, and 3.17.x before 3.17.1, as used in Mozi

If an attacker could control the contents of an iframe sandboxed with <code>allow-popups</code> but not <code>allow-scri

The Mozilla Fuzzing Team reported potential vulnerabilities present in Thunderbird 91.10. Rated high severity (CVSS 8.8)

If a compromised content process sent an unexpected number of WebAuthN Extensions in a Register command to the parent pr

An attacker could have caused a use-after-free by forcing a text reflow in an SVG object leading to a potentially exploi

If a user was convinced to drag and drop an image to their desktop or other folder, the resulting object could have been

Certain network request objects were freed too early when releasing a network request handle. Rated high severity (CVSS

Applying a CSS filter effect could have accessed out of bounds memory. Rated high severity (CVSS 8.8), this vulnerabilit

Firefox incorrectly treated an inline list-item element as a block element, resulting in an out of bounds read or memory