Use-after-free vulnerability in Firefox < 107 when loading fonts with FontFace() on a background worker

Use-after-free vulnerability in Firefox < 107 when loading fonts with FontFace() on a background worker

CVE-2022-45407 · HIGH Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

If an attacker loaded a font using <code>FontFace()</code> on a background worker, a use-after-free could have occurred, leading to a potentially exploitable crash. This vulnerability affects Firefox < 107.

Learn more about our Web Application Penetration Testing UK.