No, it's a vulnerability in privileged JavaScript. https://hg.mozilla.org/releases/mozilla-release/rev/ea5154beddff08b919697e3bed6f38cfe3a3d82f https://hg.mozil

No, it's a vulnerability in privileged JavaScript. https://hg.mozilla.org/releases/mozilla-release/rev/ea5154beddff08b919697e3bed6f38cfe3a3d82f https://hg.mozilla.org/releases/mozilla-release/rev/ea5154be... Only few components of Firefox are written in Rust. Servo has no privileged Javascript per design choice, while it does have some components written in C/C++ (mostly taken from Firefox).