Bug 967 – xmlns attribute incorrectly accepted with any value

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Bug 967 - xmlns attribute incorrectly accepted with any value


Summary:	xmlns attribute incorrectly accepted with any value

Status:	NEW

Product:	Validator.nu
Classification:	Unclassified
Component:	HTML parser
Version:	HEAD
Hardware:	All All

Importance:	P2 normal
Assigned To:	Nobody

URL:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2013-03-05 23:41 CET by Jukka K. Korpela
Modified:	2013-03-06 02:49 CET (History)
CC List:	1 user (show)

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Description Jukka K. Korpela 2013-03-05 23:41:55 CET

The following passes:

<!DOCTYPE html>
<title></title>
<body xmlns=what?>

It should not, because:

“In HTML documents, elements in the HTML namespace may have an xmlns attribute specified, if, and only if, it has the exact value "http://www.w3.org/1999/xhtml".”
  http://www.w3.org/TR/html5/dom.html#global-attributes

It seems that there is no check on the value of the xmlns attribute.

Comment 1 Michael[tm] Smith 2013-03-06 02:49:14 CET

The logic for emitting an error message for this in the htmlparser code:

http://hg.mozilla.org/projects/htmlparser/file/201db4e17f31/src/nu/validator/htmlparser/impl/TreeBuilder.java#l4695

Why that code only seems to get reached for the <html xmlns=foo> case but not for any other elements, I don't know. I'll try to get it figured out unless Henri beats me to it.