[Webkit-unassigned] [Bug 220780] Null bytes aren't percent-encoded on urlencoded over POST

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=220780

--- Comment #7 from Andreu Botella <abb at randomunok.com> ---
The WPT PR has now been merged for over a month, and as I explained in comment #6, the issue is not with Firefox and Chrome using only UTF-8. I'm not very familiar with WebKit code, but it seems like FormData::appendNonMultiPartKeyValuePairItems ultimately defers to FormDataBuilder::appendFormURLEncoded, which aims to implement the application/x-www-form-urlencoded percent-encode set (https://url.spec.whatwg.org/#application-x-www-form-urlencoded-percent-encode-set) but apparently misses the fact that the strchr in line 93 can also match a null character.

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