[bicepjai]

So basically Firefox is not affected ?

[hdgvhicv]

The listed browsers are basically skins on top of the same chromium base.

It’s why Firefox and Safari as so important despite HN’a wish they’d go away.

[autoexec]

HN doesn't want firefox to go away. HN wants firefox to be better, more privacy/security focused, and to stop trying to copy chrome out of the misguided hope that being a poor imitation will somehow make it more popular.

Sadly, mozilla is now an adtech company (https://www.adexchanger.com/privacy/mozilla-acquires-anonym-...) and by default firefox now collects your data to sell to advertisers. We can expect less and less privacy for firefox users as Mozilla is now fully committed to trying to profit from the sale of firefox users personal data to advertisers.

[jacquesm]

HN wants Firefox but with better stewardship and fewer misdirected funds.

Mozilla - wrongly - believes that the majority of FF users believe in Mozilla's hobby projects rather than that they care about their browser.

That's why - as far as I know - to this day it is impossible to directly fund Firefox. They'd rather take money from google than to be focusing on the one thing that matters.

[wvbdmp]

Particularly weird impulse for technically inclined people…

Although I must admit to the guilty pleasure of gleefully using Chromium-only features in internal apps where users are guaranteed to run Edge.

[zozbot234]

Firefox is safe from this because their CSS handling was the first thing they rewrote in Rust.

[bawolff]

I mean, even if it was written in c or c++, its unlikely two separate code bases would have the exact same use after feee vuln.

[ceteia]

Does the Rust implementation not use any unsafe and does not use libraries using unsafe?

[jsheard]

Firefox and Safari are fine in this case, yeah.

[vntok]

No, though Firefox has its own CVE this week: https://thecyberexpress.com/firefox-v147-cve-2026-2447/

[DetroitThrow]

It's pretty hard to have an accidental a use after free in the FireFox CSS engine because it is mostly safe Rust. It's possible, but very unlikely.

[topspin]

That came to my mind as well. CSS was one of the earliest major applications of Rust in FireFox. I believe that work was when the "Fearless Concurrency" slogan was popularized.

[moritzwarhier]

Firefox and Safari developers dared the Chromium team to implement :has() and Houdini and this is the result!

/s

[dzhiurgis]

Yes, because nobody uses it