"Use after free in CSS" is a funny description to see.

I think they meant something like the CSS parser, or the CSS Object Model (CSSOM).

One of the other commenters wrote a post that said it was related to @font-feature-values

Why ?

To me at least it reads funny because when I think of CSS I think of the language itself and not the accompanying tools that are then running the CSS.

Saying "Markdown has a CVE" would sound equally off. I'm aware that its not actually CSS having the vulnerability but when simplified that's what it sounds like.

Funny you'd mention that, when Notepad had a CVE in it's markdown parsing recently.

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